I have a question my daughter is 4 and had sickle cell trait, about every two to three weeks she says that her stomach is hurting. She still eats and plays but all day long she says her stomach is hurting. Later on in the day she throws up everywhere. She does this about 3 times and then after that it stops and her stomach doesn't hurt anymore. Does this have anything to do with her trait. I have the trait but have never had any symptoms. Please help.