My son is 9 years old, and he has an abdominal pain with headaches, high acid reflex with his chest hurting and throat burning (Prevacid 30mg twice daily, prescribed by GI specialist from Johns Hopkins hospital, does not help at all), upper legs ache. It is all started year ago after 2 round of the stomack flu, all blood works and stool speciment test were done, he had 3 round of different antibiotics, upper endoscopy, finally he was diagnosed with lactose intolerence he dveloped, over the last summer he was OK, and then lst October he have gor a strep, and after that he have gor all this symptoms I mentioned above. He had an endoscopy prosedure again, nothing was found. Please help