First Signs of Pregnancy
Reviewed: Dr. Gromatzky
Pregnancy refers to the time when a baby develops in a woman. It can end in a live birth, miscarriage, or abortion. Childbirth usually occurs around 40 weeks from the last menstrual period. Pregnancy can be divided into three trimesters with each lasting about 3 months.
In the first trimester, conception and implantation occurs. The risk of a miscarriage is also highest during this time. During the second trimester, the mother may feel the movements of the fetus. By 28 weeks, about 90% of babies can survive outside the uterus if medical care is available.
