I have been throwing up since early this morning, i cant keep anything, including water, down and im still having severe diarrhea. what could it be?

Doctor can evaluate: Stomach aches plus looser stools can be from variety of causes. People usually see their doctors if symptoms are bad or if they last more than 1-2 days. When diarrhea first starts happening, a person can benefit by stopping eating and start just drinking small amounts (2-4 ounces) of something like Pedialyte or half-strength Gatorade, every hour. That should decrease the amount of diarrhea.