Pregnancy By Trimester

Fetal Growth at the end of the (A) third, (B) sixth, (C) ninth month, and (D) just before birth

1st Trimester (Weeks 1-12)

During the first trimester, a woman may not even know she is pregnant. The first sign of pregnancy that she may encounter is her missed period. At this point she should take a pregnancy test to confirm that she is pregnant. After her missed period a woman may begin to experience the emotional aspects of the pregnancy such as mood swings and exhaustion. These emotional changes are usually accompanied by physical changes such as morning sickness, an increase in breast size and tenderness, and a decrease in sexual desire. There is considerable variability in the ways women experience these things.

Not only does the mother go through multiple changes during the first trimester, the baby does as well. By the end of the twelfth week the baby