Hi Its true, it could be a viral diarrhoea/ an acute gastroenteritis/ a food poisoning.But dont worry and better have some rest at home and give your stomach some rest as well. Keep taking sips of liquids,preferably coconut water.If you have too much nausea take some antiemetic(over the counter) and also other symptomatic treatments, also do take some probiotics. But if it doesnt subside and having persistent fever, better start onto some antibiotics.