My 5yr old for the first week he had severe vomiting and stomach cramps.then the next two weeks he started to refuse to eat.he will only drink liquid drinks n food,he says it feels like theres some thing in his throat behind his voicebox area and it feels like food will get stuck.he also has stomach cramps, sorethroat, pain while urinating and has a rash near anal area and pain while pooping.his doctor thinks it might be acid reflux.the acid reflux medicine his doctor gave him seems to help a little,could this be something else other then acid reflux.He already been to the doctors 8 different times and ear, nose n throat doctor twice,there is nothing in his throat.his blood and urine tests came back fine,no infections???