Hello! I have been through your question. Related your concern I think is a gastroenteritis (viral or bacterial). Usually a viral gastroenteritis is caused by noroviruses and rotaviruses. Bacterial gastroenteritis is caused by E.coli, yersinia, staphylococcus, shigella,salmonella. Furthermore in this situation I suggest to do a physical examination by an Infectious diseases specialist and to CBC,do stool culture, stool test for parasites, azotemia /creatinemia,electrolytes, abdominal ultrasound, monitoring diuresis in order to define better the diagnosis and to start a prompt treatment ( usually I prescribe ciprofloxacin in bacterial gastroenteritis). During this time you should drink a lot of water and natural tea, tresol, and take probiotics. You should eat toasted bread with cheese, banana, yogurt and should avoid eating dairy, fruit, or high-fiber foods. I hope my answer helps you. I wish you a quick recovery. Regards.