Your Babies: Week 13

fetal development

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This week, your babies' intestines are back inside where they belong.

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Female twins start having body-to-body contact earlier than male twins.

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Babies' backbones can flex, making large movement easier.

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Your babies have grown equal to the length of lemons -- 3 in.

WebMD Medical Reference Reviewed by Traci C. Johnson, MD on June 25, 2018
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