Why is my baby's tummy so big?
Weight gain and growth follows a pattern in babies: Within a couple of weeks of birth, their tummies get wider and it looks as though they swallowed a big ball. Their thighs get fatter and the loose skin on the inside of the thighs disappears and their necks get thicker and hard to clean. A big tummy is normal for a baby who is getting enough milk. Rarely, it is a sign of a serious tummy illness such as a blockage or bowel twist. If your baby’s tummy bloats suddenly and the baby seems very unhappy or extremely sleepy or starts vomiting, see your health care provider as soon as possible.