Hi and welcome to HCM.
This is standard gastroenterocolitis, probably viral or as a part of food poisoning
. Also it can be respiratory viral infections which usually goes with whole body aches. There is no specific treatment,but lot of fluids intake and easier dietarry. YOu can also reduce fever
if more than 38C with some antiinflammatory drugs. If symptoms persst more than 2-3 days it might be bacterial infection so antibiotic treatment might be neccessary. But go step by step, first try to rest and contorl hydration for next 2 days. nothing serious can happen. WIsh you good health.