My son complained of headaches...took him to his doc about a week ago-says we'll give him a strong antibiotic for a sinus infection and some medicine for allergies, if it doesn't get better in a month he needs m.r.i. he vomitted once about 6 days ago we held back on the antibiotic had an ok appetite but not his normal self, tired and a little distracted. yesterday he starts having diarrhea, stomach pains, and the same complaints of a headache. Last night he vommited multiple times and diarrhea. managed to make it through the whole day without vommitting drank some and ate some soup. thought we were clear..he just vommitted again seems to vommit at night, he had a fever earlier and stomach pains, I have been feeding him ice chips to keep him somewhat hydrated planning to take him to doctor tomorrow any clue what's happening?