it could be something you ate or a virus. a virus is more likely because it's lasted for more than a day. it could also be a bacterial infection. take care of yourself eat yogurt and crackers stay hydrated and see if it clears up. if you have no weight loss you are probably staying hydrated pretty well so that's good. if it doesn't clear up then check with a doctor.
i have had very watery diarrhea for the past 3 days. i have no other symptoms and no weight loss at all. what is it?