23 Weeks

Your baby is more than 11 inches long and weighs just over a pound. He may be able to feel your movements now, so put on some tunes and dance around the house. No matter what race your baby is, he looks red now due to blood vessels showing through his transparent skin. His true skin tone will develop over the course of his first year. Blood vessels in your baby's lungs are developing to prepare him for breathing, but complete lung development will take many more months. The lungs are the last organ to fully develop.