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Fetal Development During The First Week Of Your Pregnancy

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iVillage Staff on Mar 18, 2010 at 12:49AM

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Fetal Development During The First Week Of Your Pregnancy

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Fetal Development Week 1: See Your Baby Grow

Although you’re not actually pregnant during week one of your 40-week countdown, your physician calculates your due date by counting 40 weeks from the start of your last period, making your period and the subsequent ovulation part of your pregnancy. Here’s a shot of an immature egg developing inside the ovary before it’s released. (The process takes about 14 days).

Get more information on your first week of pregnancy.