My 10 year old son started vomiting last Saturday night, 4 episodes in total, ending Sunday. Has had on & off diarrhea all week, some nausea all week off & on. Hasn't been eating or drinking much because of those symptoms. This evening he again became nauseated, has had diarrhea & feels like he needs to vomit, but can't bring anything up. His temp is 95.7.