My 9 yr old daughter experienced what we believe to be stomach flu 3 weeks ago, it started with stomach pain then vomiting/ dry heaving for 12 hrs then she felt better. But te stomach pain as stayed settling in her belly button area, a couple days it hurt, during the last couple weeks and she cryed, but the other das she said it only hurt when presure is applies. All urine / blood est are normal. Tonight after eating a salad, she said that she has to take a deep breath to get a breath and she had one other episode of this breathing issue last spring. Any ideas, I feel helpless, as she has a high tolerance in pain she seems like it is just an annoyance to others but I know she is serious as she does not tell us things thinking it I'll go away and only mentions when it doesn't. She is a trooper but I am concerned.