Breathing movements
Your baby's body is getting plumper but their skin is still wrinkled, and the pigment is forming.
The femur, the thigh bone, is about 4 cm long, and the diameter of the head is between 5 and 6 cm.
Your baby’s lungs take a large leap ahead this week when the air sacs are formed. Your baby is carrying on with his or her breathing exercises.
It may be hard to believe, but if your baby was delivered now, it would have a chance of surviving.
Find out what happens next by looking forward in the timeline.