The eyelids are beginning to open and the baby will grow another half inch this week. This week represents the end of the second trimester and your baby's lungs are fully capable of breathing air and the brain stem can now regulate breathing as well, so if it is born prematurely you are safe.
Maternal Changes on Week 27
The uterus is close to the ribcage stifling your lungs from expanding fully. This combined with sleep issues involving the baby kicking around, frequent bathroom visits, and hormones, all equate to fatigue.
Pregnancy most commonly lasts 40 weeks, this website provides information of a general nature and is not a replacement for professional healthcare advise. There are many factors that can influence a pregnancy due date including age, ethnicity, number of previous children, and length of menstrual cycle. Every woman's pregnancy is different and the due date can only be estimated within a certain degree of accuracy.