question: My 9 yr old son saw a doctor this past Monday. The doctor said his sinuses were very swollen and clogged. Diagnosis was sinus infection and seasonal allergies. My son was also complaining about stomach pain. Doctor examined abdomen and didn t find anything. It has been almost 5 days and he is so uncomfortable at school. Treatment is amoxicillin and Claritin. Is there anything we can do for the abdominal pain?