My Son Has Been Sick And Out Of School For

My son has been sick and out of school for six weeks with persistant extreme naseau, persistant pain in abdomen and as of a few days ago, pain in his belly, not penis, when he urinates-we have done h pilori, occult blood and blood tests to rule our pancreatic problems and an ultra sound-all negative/normal results. Meeting with GI doctor Monday to schedule a endoscopy and possible a colonoscopy