Fetal Development Week 33: See Your Baby Grow

This week your baby’s head will grow around 3/8ths of an inch due to how quickly her brain is growing. And although most of her bones have hardened, her skull remains pliable so she can fit through the birth canal. That’s why so many babies are born with oddly molded heads, but don’t worry they eventually become perfectly round.

Get more information on being 33 weeks pregnant.