Fetal Development By Week: 4 Weeks Pregnant

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iVillage Staff on Mar 18, 2010 at 4:46PM

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Fetal Development By Week: 4 Weeks Pregnant

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Fetal Development Week 4: See Your Baby Grow

Your baby is microscopic right now, but if we magnified her photo she might look something like this. You can get an even better view of those ridges down her back, which are called somites, the building blocks of the musculoskeletal system.

Get more information on being 4 weeks pregnant.

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