Hi. Thanks for your query. Noted the history and understood the concerns. Obviously the cause of vomiting, diarrhea and pain in abdomen as you have explained is due to gastroenteritis either due to viral or bacterial reasons. This can be confirmed by tests of blood and stool. I would advise you the following in such a situation: Consult the Doctor as this may turn out to be a serious condition if the diarrhea continues with its attendant complication. Tests of stool and blood. Ultrasonography of abdomen. A course of an antibiotic and metronidazole if there is an evidence of a bacterial infection. Take plenty of oral fluids, electrolyte solution to avoid dehydration and electrolyte imbalance. Probiotics, activated charcoal helps further. Use only a boiled cooled water and homemade foods.