My son has been complaining lately of his stomach hurting. He is 8 and was on Amoxocillan over a week ago for a sinus infection. We thought it was the Amoxocillan, but it should be out of his system by now. He acts normal, but usually complains in the morning. I thought it was because he didn't want to go to school, but he complained Saturday morning, when there was no school. It usually goes away within a few hours and he says it hurts in the middle, around his belly-button area. When he says it, he says, "I'm not kidding". I think he is doing it to get a reaction out of us, but I don't want to seem unsympathetic. So my question is---Is this a phase? Has anyone else experienced this with their child? Any advice would be appreciated!!!