This week’s major developments: The nose, mouth, and ears that you’ll spend so much time kissing in eight months are beginning to take shape. If you could see into your uterus, you’d find an oversize head and dark spots where your baby’s eyes and nostrils are starting to form. His or her emerging ears are marked by small depressions on the sides of the head, and the arms and legs by protruding buds. Your baby’s heart is beating about 100 to 160 times a minute – almost twice as fast as yours – and blood is beginning to course through his or her body. The intestines are developing, and the bud of tissue that will give rise to the lungs has appeared. The pituitary gland is forming, as are the rest of your baby’s brain, muscles, and bones. Right now, your baby is a quarter of an inch long, about the size of a lentil.