When a child can't describe their pain, it can frustrate parents. We can help.
Adults are not the only ones who deal with gastrointestinal reflux or heartburn. It is common for babies to spit up and it is usually due to the immaturity of the esophageal sphincter (LES), which is a valve-like structure that opens and closes to allow food into the stomach. Since babies cannot sit up on their own it is easier for the food to come back up through the sphincter instead of digesting properly.
As long as your baby is gaining weight and growing with no other medical problems then there really is not a problem. The reflux usually goes away on its own when the baby is 12-18 months old. If there is excessive vomiting, there are some conservative treatments you can talk to your gastroenterologist about trying. Be sure to let your gastroenterologist know if your baby is not gaining weight appropriately or if other medical conditions develop. They can let you know what treatments or precautions you can take to help get rid of the problem.