Constipation occurs when bowel movements are abnormally hard and infrequent and are accompanied by pain and discomfort.
Large or hard bowel movements without pain are normal. It is a common practice for babies to grunt, push, strain, draw up their legs, squat, and become flushed in the face during passage of bowel movements, but they shouldn't cry. If they are straining, you can assist your baby by holding their knees toward or against the chest to give them something to push against. Your baby, over time, will go through bowel pattern changes. They might change from having bowel movements 3 - 4 times every day to having one bowel movement every 3 - 4 days. This is normal as long as the stool stays soft and/or your child is not in pain.