T.D.
I think if there's an option for him to see a physician over there it might be a good idea. I'm the mom who has the philosophy that I'd rather have it checked into and "be safe rather than sorry." The biggest reason for me is the diarrhea. If he's refusing food and milk and having bowel complications he could have some kind of stomach bug or something. And, if he is sick traveling home on the plane could make him more miserable. Good Luck!!