Hello. My son is 14 years old. He is in good health. He does have asthma that is triggered by allergies. Currently he is getting allergy shots once to twice a week. He takes Dulara, Fluticasone propionate, singular, and zyrtec. He is having stomach pains that come and go. They start around his belly button and radiate up and down. its constant pain, with waves of serious pain that almost brings him to tears? Any ideas? No fever. chills off and on with the pain but not every time. Thank you for your time and help. Please don t be offended, but i am going to contact my brother in law who is a physician and check with him quick.