Baby: Week 12

This week, your fragile skin is starting to cover itself with an ultra-fine, warm hair (lanugo) that usually disappears before birth

Human embryo 12 weeks from conception. Photo credit - Science Photo Library

You’re about 8cm long and weigh about 40g. You’re about the size of your mother’s fist. 

Not only do you have a huge head, you’re beginning to look a little funny and hairy.  This week, your fragile skin is starting to cover itself with an ultra-fine, warm hair (lanugo) that usually disappears before birth. Your eyebrows and head hair are also starting to grow.

You can grasp, squint, frown, and grimace.[1] Movements are now more fluid like water ballet.

Your intestines are producing meconium (waste, which will present in his first bowel movement).[2]

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