Stools are usually watery and can be passed several times and hour.
Diarrhea can continue for over a week with the stools becoming less frequent and then more firm. Fever should not last longer than 3 days. When to Call the Doctor What You Can Do for a Stomach Virus with Diarrhea At the first signs of very watery stools, stop milk products. This includes cows milk formulas for infants. Breast feeding, however, does not need to be stopped.