My 6 year old girl is having headache and sometimes followed by vomiting then after no headache. Sometimes she vomits three or four times whenever she eats something. We consulted a pediatrician, performed blood tests, everything came normal. He suggested medication for migraine for 10 days. And said if it continues, after the medication, then a ct scan can be performed. It is about 1 month after taking medicine, she is okay now. What may be the reason? Plz reply