I have a 13 year old daughter who for the past couple of days has been belching really loudly, complaining of stomach pain, and is nauseous. She has not vomited or has had diarrhea. These symptoms have occurred after eating and early morning prior to eating. Should she see a gastroenterologist. The pediatrician thinks it s a stomach virus but she hasn t exhibited the classic symptoms. She still has a healthy appetite and her energy level is fine. please advice. Thank you so much!