Hello! I think you are suffering from acute infectious gastroentritis. What all you need is corse of antibiotic like ofloxacina dn
ornidazole and some antispasmodic agent like
drotaverine tds and antiemetic agent like
ondansetron. Keep hydration well. avoid milk for few days if you are taking. If not improved within 3 days, consult a MD doctor or a gastroenterologist. I hope this will help you. Remain in touch