My 5 year old son came down with a stomach ache, and vomiting the night before last. Since then he stopped vomiting, has had no fever, is holding down fluids, and small portions of crackers/toast. He is still complaining of stomach pain, and has been sleeping much more then usual. We were told by a urgent care physician that it most likely is just a 24-72 hour stomach "bug". What do you think? It worries me that he is not as active as usual.