Pregnancy Week 24: Baby Development, Movement, Glucose Test & Symptoms

Pregnancy week 24 is a major second-trimester milestone. The fetus is growing quickly, movements are becoming stronger, the lungs are developing new structures, fat storage is increasing, and reflexes are becoming more obvious.

This week also begins an important prenatal-testing period. For many pregnant people, gestational diabetes screening takes place between 24 and 28 weeks.

Week 24 is also sometimes discussed in relation to fetal viability. This topic needs careful language: survival after extremely premature birth depends heavily on exact gestational age, birth weight, medical circumstances, neonatal intensive-care resources and many other factors. It should never be reduced to a simple guarantee.

Quick answer: At 24 weeks pregnant, the fetus is around 30 cm from head to heel, approximately the size of a corn on the cob according to NHS guidance. The lungs are continuing to develop, alveoli are beginning to form, reflexes are developing, movements are stronger, and routine gestational-diabetes screening may now be offered.

What Does 24 Weeks Pregnant Mean?

Pregnancy is usually dated from the first day of the last menstrual period (LMP).

At 24 weeks pregnant, conception generally occurred about 22 weeks earlier in a typical menstrual cycle.

You are still in the second trimester.

ACOG defines the second trimester as:

14 weeks 0 days through 27 weeks 6 days.

The third trimester begins at 28 weeks.

Week 24 therefore places you near the later part of the second trimester.

How Big Is the Baby at 24 Weeks?

The NHS estimates the fetus at around 30 cm from head to heel at week 24.

ACOG states that by the end of week 24 the fetus is approximately:

  • 12 inches long
  • around 1½ pounds

These are approximate population averages.

Actual measurements vary because of:

  • genetics;
  • exact gestational age;
  • fetal sex;
  • natural biological variation;
  • measurement technique.

A single size estimate should not be interpreted without clinical context.

What Is Developing at 24 Weeks?

ACOG describes weeks 21–24 as a period when:

  • kicks and turns become stronger;
  • the sucking reflex develops;
  • fat forms beneath the skin;
  • fingerprint and footprint ridges develop;
  • the skin remains wrinkled and reddish because blood vessels are visible.

At week 24 specifically, MedlinePlus notes that the fetus has:

  • fully developed eyes;
  • a hand reflex;
  • a startle reflex;
  • developing fingerprints and footprints;
  • developing alveoli in the lungs.

What Are Alveoli?

Alveoli are tiny air-sac structures in the lungs.

After birth, mature alveoli help transfer:

  • oxygen from inhaled air into the blood;
  • carbon dioxide from the blood into exhaled air.

At 24 weeks, these lung structures are still developing.

Their presence does not mean the lungs are ready to function independently.

Are the Lungs Fully Developed at 24 Weeks?

No.

The lungs are developing rapidly but remain immature.

MedlinePlus notes that alveoli are forming at week 24, while ACOG describes lung development as continuing through this stage.

Important later developments include production of surfactant, a substance that helps keep the lung’s air sacs open after birth.

ACOG places significant surfactant production within the weeks 25–28 developmental stage.

Does the Baby Breathe at 24 Weeks?

The fetus does not breathe air.

Before birth, oxygen comes through the:

placenta → umbilical cord → fetal circulation

The fetus does make breathing-like movements.

These movements help exercise and develop:

  • the diaphragm;
  • chest muscles;
  • lungs.

What Is Surfactant?

Surfactant is a substance produced in the developing lungs.

Its job after birth is to help prevent tiny lung air sacs from collapsing during breathing.

Surfactant production becomes increasingly important as pregnancy advances.

At week 24, the lungs still need considerable maturation.

Does the Baby Have a Startle Reflex at 24 Weeks?

Yes.

MedlinePlus identifies a startle reflex as a developmental feature at week 24.

As hearing and nervous-system function develop, unexpected stimulation may produce movement.

This may appear as:

  • sudden limb movement;
  • body movement;
  • brief jerking motion.

Does the Baby Have a Hand Reflex?

Yes.

MedlinePlus also notes a developing hand reflex at 24 weeks.

This reflects increasing coordination between the:

  • brain;
  • spinal cord;
  • nerves;
  • muscles.

Hand and grasping abilities continue developing for many more weeks.

Are the Eyes Fully Developed at 24 Weeks?

MedlinePlus describes the eyes as fully developed anatomically by week 24.

However, that does not mean vision is mature.

The visual system still needs further development of:

  • neural pathways;
  • retinal function;
  • brain processing.

Functional vision continues maturing long after this stage.

Are the Eyelids Open at 24 Weeks?

Eyelid opening becomes more relevant during the weeks that follow.

ACOG describes the eyes opening and closing during the 25–28 week developmental period.

So at exactly week 24, the eyes themselves may be anatomically well developed while eyelid function is still transitioning.

Are Fingerprints and Footprints Forming?

Yes.

ACOG notes that skin ridges form during weeks 21–24 and later become fingerprints and footprints.

MedlinePlus also identifies fingerprint and footprint formation at week 24.

These patterns are unique to each individual.

Is the Baby Gaining Fat?

Yes.

Fat continues accumulating under the skin.

ACOG notes that fat begins forming during weeks 21–24, while MedlinePlus describes fetal fat storage increasing during weeks 23–25.

This fat eventually helps with:

  • temperature regulation;
  • energy storage;
  • smoother skin;
  • body shape.

The fetus still has much more weight to gain.

What Does the Baby’s Skin Look Like?

The skin remains relatively:

  • thin;
  • reddish;
  • wrinkled.

ACOG explains that visible blood vessels contribute to the reddish appearance during weeks 21–24.

As fat accumulates later, the skin becomes smoother and less translucent.

Is the Bone Marrow Making Blood Cells?

Yes.

MedlinePlus describes weeks 23–25 as a period when bone marrow begins producing blood cells.

Earlier in fetal development, the liver had a larger role in blood-cell production.

Bone marrow gradually takes over this function.

Are the Lower Lung Airways Developing?

Yes.

MedlinePlus states that the lower airways of the lungs develop during weeks 23–25.

This is another reason week 24 is such an important respiratory-development stage.

The branching respiratory system continues maturing throughout later pregnancy.

Is the Baby Moving Strongly at 24 Weeks?

Usually, movement is becoming increasingly obvious.

ACOG notes that kicks and turns are stronger during weeks 21–24.

You may feel:

  • kicks;
  • rolls;
  • stretches;
  • turns;
  • pushing sensations;
  • rapid small movements.

Some movements may even become visible through the abdomen.

Should You Feel Movement Every Day?

Many people notice fetal activity daily by this stage, but movement patterns vary.

Factors affecting what you feel include:

  • placental position;
  • fetal position;
  • whether you are active or resting;
  • individual pregnancy differences.

You should gradually become familiar with your baby’s usual activity.

If movement becomes noticeably reduced compared with what you normally feel, contact your maternity healthcare service rather than waiting for a fixed kick-count number.

Should You Start Formal Kick Counting at 24 Weeks?

Not necessarily.

Different healthcare systems introduce formal fetal-movement counting at different stages, and some clinicians do not recommend a rigid counting method for everyone.

At week 24, knowing your baby’s developing usual movement pattern is generally more useful than comparing yourself with another pregnancy.

Follow your own maternity team’s movement guidance.

Can the Baby Hear Your Voice?

Hearing has been developing for several weeks.

At 24 weeks, the fetus is exposed to:

  • your heartbeat;
  • blood-flow sounds;
  • digestive sounds;
  • your voice;
  • environmental sounds.

These sounds are filtered through maternal tissues and amniotic fluid.

Hearing continues maturing after week 24.

Can Loud Sounds Make the Baby Move?

Possibly.

The nervous system and hearing pathways are increasingly developed.

MedlinePlus notes a startle reflex at week 24, while ACOG describes more obvious responses to loud sounds during the following 25–28 week stage.

Avoid intentionally exposing the abdomen to very loud sound.

Is the Baby Sleeping?

Yes.

Fetal sleep–wake patterns are developing.

The previous week is notable for substantial REM sleep, and these neurological sleep patterns continue evolving.

The fetus does not necessarily sleep when you do.

You may notice more movement when you lie down simply because you are still enough to detect it.

What Does “Viable at 24 Weeks” Mean?

The NHS describes a fetus at week 24 as potentially able to survive outside the uterus with appropriate neonatal support.

However, viability is not a guarantee and is not a single universal cutoff.

Outcome after extremely premature birth can depend on:

  • exact gestational age in days;
  • birth weight;
  • fetal sex;
  • infection;
  • congenital conditions;
  • antenatal treatment;
  • place of birth;
  • neonatal intensive-care resources;
  • individual medical circumstances.

This topic should always be discussed with obstetric and neonatal specialists in an actual threatened-preterm-birth situation.

Does Viability Mean the Baby Is Fully Developed?

No.

At 24 weeks, many systems remain immature, especially the:

  • lungs;
  • brain;
  • nervous system;
  • temperature-control system;
  • digestive system.

An extremely premature newborn at this gestation would require highly specialized neonatal care.

What Happens if Preterm Labor Is Suspected at 24 Weeks?

This is an urgent medical situation.

Symptoms that may require immediate evaluation include:

  • regular painful contractions;
  • persistent pelvic pressure;
  • significant vaginal bleeding;
  • fluid leaking from the vagina;
  • persistent lower abdominal cramping;
  • concerning back pain.

Do not use an online article to determine whether symptoms are “real labor.”

Contact maternity services urgently.

What Is Happening in Your Body at 24 Weeks?

The growing fetus and uterus place increasing strain on muscles, joints and nearby organs.

The NHS notes that pain may be felt around the:

  • ribs;
  • back;
  • breasts;
  • abdomen;
  • bottom.

This is partly related to pregnancy hormones loosening ligaments and muscles and the growing fetus placing pressure on surrounding structures.

Is Increased Hunger Normal at 24 Weeks?

Yes.

The NHS notes that you may feel much hungrier around this stage.

However, appetite does not mean you need to double your intake.

Under NHS guidance, additional calories are not generally needed until the third trimester beginning at week 28.

Do You Need to Eat for Two?

No.

“Eating for two” is misleading.

Focus on nutritional quality.

A balanced pregnancy diet can include:

  • vegetables;
  • fruit;
  • whole grains;
  • protein foods;
  • dairy or fortified alternatives;
  • iron-rich foods;
  • healthy fats;
  • adequate fluids.

Is Weight Gain Normal at 24 Weeks?

Yes.

The NHS notes that weight gain is common at this stage, but also emphasizes that bump appearance varies widely between pregnancies.

Healthy weight gain depends on individual factors such as:

  • pre-pregnancy body size;
  • multiple versus singleton pregnancy;
  • medical conditions;
  • nutritional status.

Do not use another person’s bump or weight as your target.

What If Your Bump Looks Small?

A small-looking abdomen does not automatically mean the fetus is too small.

Bump appearance is influenced by:

  • height;
  • body shape;
  • abdominal muscle tone;
  • fetal position;
  • uterus position.

Healthcare professionals use clinical measurements and ultrasound when growth assessment is required.

What Symptoms Are Common at 24 Weeks?

The NHS lists possible symptoms including:

  • tiredness;
  • sleep problems;
  • stretch marks;
  • swollen or bleeding gums;
  • round-ligament pain;
  • hemorrhoids;
  • headaches;
  • backache;
  • nosebleeds;
  • indigestion;
  • heartburn;
  • bloating;
  • constipation;
  • leg cramps;
  • feeling hot;
  • dizziness;
  • swollen hands and feet;
  • urinary infections;
  • vaginal infections;
  • skin pigmentation changes;
  • oily skin;
  • thicker hair.

Is Rib Pain Normal?

Mild rib discomfort can occur because the uterus is getting larger and posture is changing.

The NHS specifically identifies pain around the ribs and other areas as common at week 24.

Seek medical advice if pain is:

  • severe;
  • persistent;
  • associated with breathing difficulty;
  • accompanied by feeling seriously unwell.

Is Back Pain Normal?

Yes, mild backache is common.

Possible contributors include:

  • increased abdominal weight;
  • changing posture;
  • loosening ligaments;
  • altered center of gravity.

Helpful strategies may include:

  • supportive footwear;
  • gentle activity;
  • good lifting technique;
  • changing position frequently.

Is Round Ligament Pain Still Normal?

Yes.

The NHS lists side pain from the expanding uterus among possible week-24 symptoms.

It may feel like:

  • pulling;
  • stretching;
  • brief sharp pain;
  • groin discomfort.

Severe or persistent abdominal pain should be medically assessed.

Are Braxton Hicks Possible?

Some people notice occasional uterine tightening during the second trimester.

These may be Braxton Hicks contractions.

They are generally:

  • irregular;
  • brief;
  • not progressively stronger.

At 24 weeks, regular, painful or increasing contractions require medical advice because preterm labor needs to be excluded.

Is Heartburn Normal?

Yes.

Hormonal changes relax the digestive tract, and the growing uterus changes abdominal pressure.

Helpful measures may include:

  • smaller meals;
  • eating slowly;
  • avoiding foods that trigger reflux;
  • remaining upright after eating.

Ask a healthcare professional about pregnancy-safe medication when necessary.

Is Constipation Normal?

Yes.

Hormonal changes and iron supplementation can contribute.

Helpful measures include:

  • water;
  • vegetables;
  • fruit;
  • beans;
  • whole grains;
  • appropriate exercise.

Do not stop prescribed iron without discussing it with your healthcare professional.

Are Hemorrhoids Common?

Yes.

Constipation and increasing pressure in the pelvis can contribute to hemorrhoids.

Symptoms may include:

  • itching;
  • discomfort;
  • pain during bowel movements;
  • small amounts of bleeding.

Discuss significant bleeding with a healthcare professional.

Are Leg Cramps Normal?

Yes.

Leg cramps can occur during pregnancy, especially at night.

Gentle stretching may help.

Seek urgent medical care if one leg becomes unusually:

  • swollen;
  • red;
  • hot;
  • persistently painful.

Those features need assessment for causes other than ordinary muscle cramp.

Is Swelling Normal?

Mild swelling can occur.

The NHS lists swollen hands and feet among possible symptoms at week 24.

Sudden or severe swelling—especially with:

  • severe headache;
  • vision changes;
  • feeling very unwell;

should be medically assessed.

Is Vaginal Discharge Normal?

White or milky discharge can be normal during pregnancy.

Contact a healthcare professional if discharge becomes:

  • green or yellow;
  • strongly unpleasant smelling;
  • itchy;
  • painful;
  • associated with fever.

A sudden gush or persistent watery leakage requires medical assessment because it may represent amniotic fluid.

What About Bleeding?

Bleeding during pregnancy should be medically assessed.

Seek urgent care for:

  • heavy bleeding;
  • severe pain;
  • fainting;
  • severe dizziness;
  • contractions;
  • fluid leakage.

Is Gestational Diabetes Screening Done at 24 Weeks?

Yes, week 24 begins the standard screening window for many pregnant people.

ACOG states that glucose screening is usually performed between 24 and 28 weeks.

If you have certain diabetes risk factors, testing may have been performed earlier.

What Is Gestational Diabetes?

Gestational diabetes is diabetes first diagnosed during pregnancy.

Pregnancy hormones can make it harder for insulin to keep blood glucose within the desired range.

It can occur even if you:

  • had normal glucose before pregnancy;
  • feel completely well;
  • have no obvious symptoms.

That is why screening is important.

Does Having Gestational Diabetes Mean You Had Diabetes Before Pregnancy?

No.

Gestational diabetes refers specifically to glucose intolerance first identified during pregnancy.

Some people diagnosed during pregnancy may ultimately be found to have had previously unrecognized diabetes, but this is a different clinical question.

Your healthcare professional can interpret test results.

What Happens During the Glucose Screening Test?

ACOG describes a common glucose screening approach in which:

  1. you drink a glucose-containing liquid;
  2. you wait about one hour;
  3. a blood sample is taken;
  4. glucose is measured.

If the result is above the screening threshold, further testing may be needed.

Does a High Screening Result Mean You Have Gestational Diabetes?

Not necessarily.

The initial glucose test is a screening test.

ACOG notes that if glucose is high, another glucose test may be used to confirm whether gestational diabetes is present.

Do not diagnose yourself based on one screening number.

Can You Fail the Glucose Test Because You Ate Sugar?

The purpose of screening is to assess how your body handles glucose during pregnancy.

Do not attempt to manipulate the result by drastically changing your diet before testing unless the clinic gives specific instructions.

Follow the preparation instructions from your healthcare service.

Why Does Gestational Diabetes Matter?

High blood glucose during pregnancy can increase certain pregnancy risks.

The good news is that gestational diabetes can often be managed.

ACOG notes that management can include:

  • healthy eating;
  • regular physical activity;
  • glucose monitoring;
  • medication when required.

Does Insulin Harm the Baby?

When insulin is medically indicated for gestational diabetes, ACOG notes that insulin does not cross the placenta.

Treatment choices should be individualized by your healthcare professional.

What Other Tests May Be Done Around This Period?

Prenatal care schedules vary.

Your healthcare team may monitor:

  • blood pressure;
  • urine;
  • blood count;
  • fetal growth;
  • fetal movement;
  • previous scan findings.

Testing depends on your country and medical circumstances.

What About Anemia?

Iron needs are increasing during pregnancy because maternal blood volume expands and the fetus requires iron.

Symptoms such as:

  • fatigue;
  • weakness;
  • dizziness;
  • breathlessness;

can occur with anemia, but they can also occur during normal pregnancy.

A blood test is needed for diagnosis.

Should You Take Extra Iron?

Do not automatically start high-dose iron.

Some prenatal vitamins already contain iron.

Additional supplementation may be based on:

  • blood-test results;
  • diet;
  • medical history;
  • your clinician’s recommendation.

Too much iron can worsen constipation and cause other side effects.

Is the Anatomy Scan Finished by 24 Weeks?

Most routine anatomy scans are completed earlier, generally in the 18–22 week window.

If your scan was incomplete or showed something requiring follow-up, additional imaging may take place after that window.

A follow-up scan does not automatically indicate a serious problem.

Why Might Another Scan Be Needed?

Possible reasons include:

  • fetal position prevented clear views;
  • placenta location needs reassessment;
  • growth needs monitoring;
  • a structure requires another look;
  • a specialist scan was recommended.

Your healthcare provider should explain the specific reason.

What If the Anatomy Scan Was Normal?

A normal anatomy scan is reassuring.

However, ultrasound cannot identify every possible:

  • genetic condition;
  • structural abnormality;
  • developmental problem.

Routine prenatal care remains important.

Is Whooping Cough Vaccination Still Relevant?

Vaccination timing varies by country.

Under NHS guidance, whooping cough vaccination can be given between 16 and 32 weeks and is often offered around week 20.

Follow the vaccination schedule recommended in your own country.

Is Exercise Safe at 24 Weeks?

For many uncomplicated pregnancies, regular moderate exercise remains appropriate.

The NHS recommends around 150 minutes of activity per week during pregnancy.

Activities might include:

  • walking;
  • swimming;
  • prenatal exercise;
  • suitable strength training.

Adapt exercise as balance and comfort change.

Are Pelvic Floor Exercises Important?

Yes.

Pregnancy puts increasing pressure on pelvic-floor muscles.

The NHS specifically encourages pelvic-floor exercises around this stage to help reduce urine leakage.

These muscles support the:

  • bladder;
  • uterus;
  • bowel.

Should You Start Making a Birth Plan?

You can.

The NHS identifies week 24 as a reasonable time to begin thinking about a birth plan.

A birth plan can include preferences about:

  • place of birth;
  • labor support;
  • pain relief;
  • movement during labor;
  • immediate newborn care;
  • feeding.

A plan expresses preferences rather than guaranteeing exactly how labor will happen.

Are Antenatal Classes Useful?

Yes.

The NHS encourages asking about antenatal classes around this stage.

Classes may cover:

  • labor and birth;
  • pain-relief options;
  • breastfeeding;
  • newborn care;
  • partner support.

Should You Think About Postpartum Contraception?

You can.

The NHS suggests pregnancy as a useful time to begin considering contraception after birth because fertility can return sooner than many people expect.

You do not need to make a final decision at week 24.

Is Mental Health Still Important?

Yes.

Pregnancy does not only affect physical health.

Contact your healthcare professional if:

  • anxiety persists;
  • low mood continues;
  • sleep is severely affected by worry;
  • you struggle to cope with normal activities.

The NHS encourages speaking with a doctor or midwife about anxiety or low mood during pregnancy.

Can You Travel at 24 Weeks?

Many people with uncomplicated pregnancies can travel.

Before significant travel, consider:

  • maternity care at the destination;
  • insurance;
  • airline rules;
  • infection risks;
  • food and water safety;
  • long periods of sitting;
  • your medical history.

Airline restrictions become more relevant as pregnancy progresses.

Is Sex Safe at 24 Weeks?

For many uncomplicated pregnancies, sexual activity remains safe.

Seek personalized medical advice if you have:

  • vaginal bleeding;
  • fluid leakage;
  • cervical concerns;
  • placenta-related complications;
  • regular contractions;
  • instructions to avoid intercourse.

When Should You Seek Medical Help at 24 Weeks?

Seek urgent medical assessment for:

  • heavy vaginal bleeding;
  • persistent or significant fluid leakage;
  • regular painful contractions;
  • severe abdominal or pelvic pain;
  • fainting;
  • severe or sudden breathing difficulty;
  • chest pain;
  • high fever;
  • severe headache with vision changes;
  • severe one-sided leg swelling or pain;
  • a significant reduction in fetal movement compared with your baby’s developing usual pattern.

At 24 weeks, symptoms suggesting preterm labor should not be monitored at home without professional advice.

Pregnancy Week 24 FAQs

How big is the baby at 24 weeks?

The NHS estimates the fetus at around 30 cm from head to heel, approximately the size of a corn on the cob.

What is developing at 24 weeks?

The lungs continue developing, alveoli begin forming, hand and startle reflexes are present, fingerprints and footprints are forming, fat stores are increasing and movement is becoming stronger.

What are alveoli?

Alveoli are tiny lung air sacs that will eventually help exchange oxygen and carbon dioxide after birth. They are beginning to form at week 24.

Are the lungs mature at 24 weeks?

No. Lung development is still incomplete, and significant maturation—including increasing surfactant production—occurs later.

Does the baby have a startle reflex?

Yes. MedlinePlus lists a startle reflex among week-24 developments.

Are fingerprints developing?

Yes. Fingerprint and footprint ridges continue developing during this period.

Can you feel movement at 24 weeks?

Most people can feel some fetal movement by this stage, although strength and pattern vary.

Should you count kicks at 24 weeks?

Not necessarily with a rigid number. Follow your maternity team’s guidance and become familiar with your baby’s usual activity pattern.

Is 24 weeks considered viable?

The NHS notes that survival outside the uterus can be possible at this stage with specialized neonatal support, but outcome varies greatly and should never be treated as guaranteed.

Is the glucose test done at 24 weeks?

Yes. ACOG states that routine gestational-diabetes screening is usually performed between 24 and 28 weeks.

Does an abnormal glucose screening result mean gestational diabetes?

Not automatically. An elevated screening result may lead to additional testing to confirm the diagnosis.

Is increased hunger normal at 24 weeks?

Yes. The NHS notes that appetite may increase around this stage.

Do you need to eat for two?

No. NHS guidance states that additional calories are not needed until the third trimester.

Are Braxton Hicks contractions possible?

Occasional irregular tightening can occur, but regular painful contractions at 24 weeks need prompt medical assessment.

Is week 24 still the second trimester?

Yes. The second trimester continues through 27 weeks and 6 days under ACOG’s definition.

What Comes Next?

During Pregnancy Week 25, the fetus moves into the 25–28 week developmental phase. The lungs become more structurally developed but remain immature, the nervous system progresses, the body adds more fat, and reactions to sound may become more noticeable.

You also remain within the important 24–28 week gestational-diabetes screening window.

Previous: Pregnancy Week 23
Next: Pregnancy Week 25
Tool: Pregnancy Due Date Calculator

Medical References

This article is based on current educational information from established medical and public-health organizations, including:

  • NHS — 24 Weeks Pregnant
  • American College of Obstetricians and Gynecologists (ACOG) — How Your Fetus Grows During Pregnancy
  • ACOG — Changes During Pregnancy
  • ACOG — Routine Tests During Pregnancy
  • ACOG — Gestational Diabetes
  • MedlinePlus — Fetal Development
  • MedlinePlus — 24-Week Fetus

Editorial & Medical Information

Last content review: October 2026

This article provides general educational pregnancy information only. It does not diagnose pregnancy complications, predict survival after premature birth, interpret fetal movement or glucose results, recommend medications, or replace individualized prenatal care.

Fetal development, movement, symptoms and medical needs vary considerably between pregnancies. Contact a qualified healthcare professional for personal concerns about contractions, bleeding, fluid leakage, fetal movement, glucose testing, breathing difficulty or other pregnancy symptoms.

Conclusion

Pregnancy week 24 is a major developmental and prenatal-care milestone. The fetus is around 30 cm from head to heel according to NHS guidance, while MedlinePlus identifies developing alveoli, hand and startle reflexes, and fingerprint and footprint formation as important week-24 features.

Respiratory development remains especially important. Bone marrow is producing blood cells, lower lung airways continue developing and fetal fat storage is increasing, but the lungs remain immature and need substantial further development before normal independent breathing is possible.

For the pregnant person, appetite and weight may increase, while growing pressure on the ribs, back, abdomen and other areas can contribute to aches, heartburn, constipation, leg cramps and sleep difficulties.

Week 24 also begins the standard 24–28 week gestational-diabetes screening window. ACOG recommends routine glucose screening during this period for people who have not already required earlier testing.

Continue regular prenatal care, balanced nutrition, appropriate physical activity and awareness of your baby’s developing movement pattern. Heavy bleeding, regular painful contractions, significant fluid leakage, severe pain, sudden breathing difficulty or a concerning reduction in fetal movement requires medical assessment rather than online self-diagnosis.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top