Could this be a normal gastric flu and i should wait ot out?

Hard to guess: Vomiting or diarrhea can be from variety of causes. People usually see their doctors if symptoms are bad or if they last more than 1-2 days. When diarrhea first starts happening, a person may benefit by stopping eating and start just drinking small amounts (3-4 ounces) of something like Pedialyte or half-strength Gatorade, each hour for one day. Higher fevers can mean seeing a doctor sooner.