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You are in Week 4 of Your Pregnancy
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Size: .006 inches

 

Your Baby

Your baby is about to take up temporary residence in your uterus. What is still just a little cluster of cells now burrows into the lining of the uterine wall and then divides in half. One half becomes the placenta and the other the baby. At the same time, different germ layers form. These are the building blocks for the central nervous and skeletal systems.

You

You may experience some spotting (or slight bleeding) for 1 or 2 days around the time that the tiny cluster of cells implants in the lining of your uterus. This lining then becomes thicker and your cervix is sealed by a plug of mucus. Oh, a woman’s body sure works in mysterious (and gross-sounding) ways!

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