27 Weeks

This week, your baby weighs almost 2 pounds (like a head of cauliflower) and is about 14 1/2 inches long with her legs extended. She's sleeping and waking at regular intervals, opening and closing her eyes, and perhaps even sucking her fingers. With more brain tissue developing, your baby's brain is very active now. Baby's lungs are going through some major developments these days, which (combined with the opening of previously plugged nostrils) means he's now able to practice inhaling and exhaling. The lack of air in your womb means every "breath" is filled with amniotic fluid, but hey -- it's progress. While her lungs are still immature, they would be capable of functioning — with a lot of medical help — if she were born now.