Pregnancy begins with the first day of your menstrual cycle, which means that you have not yet conceived and there cannot be fetal development yet.
Maternal Changes on Week 1
The first day of your menstrual cycle has began and you are planning on conceiving. Ovulation will occur about two weeks after your period has begun. If you have not already, you should be living healthfully at this point by eating a healthy diet and being free from any drugs or alcohol. Prepare your body for its journey along pregnancy by getting proper nutrition and exercise, and continue throughout your pregnancy.
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.