Stages of Pregnancy Pictures Slideshow: See the 1st, 2nd and 3rd Trimesters of Mom & Baby

Medical- Medicine

Overview

Pregnancy is measured in trimesters from the first day of your last menstrual period (LMP) and normally lasts about 40 weeks from conception to the birth of a baby. This time is roughly divided into 3 periods: the first trimester, second trimester and third trimester.

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