Fetal Development Pictures | 15 Weeks

Fetal Development at 15 weeks:

What's happening this week:

The fetus is now 4 1/2 inches from crown to rump, and gaining weight fast. He can suck his thumb now and is beginning to grow hair. The skeleton is hardening, the organs are functioning and the network of blood vessels is growing by the day.

Your pregnancy week by week: 15 Weeks Pregnant

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