SPECIAL OFFER: - Limited Time Only!
(The ad below will not display on your printed page)

Your Changing Body Week-by-Week

From the time of conception until the time you give birth, your body is going to go through some major changes. Find out what to expect with our week-by-week look at your changing body.
woman looking at her belly Week 2

Is it official yet? Not quite -- but be assured that your body's got those baby-making mechanics well under way. After fertilization, your ovaries start ramping up the production of progesterone, a hormone that prepares your uterus to host the newly fertilized egg, or zygote, that will live there for the next 38 weeks or so.