Hello everyone, my son fell from the swing on Thursday. But that day a…

Hello everyone, my son fell from the swing on Thursday. But that day and the next day everything was fine. We went to the shopping center the next day, he played and so on. But on Saturday morning he had vomiting and diarrhea started, straight like a fountain. I thought it was because of the fall, but when we called an ambulance they said he caught an infection, we were given treatment. I did everything according to the doctor's instructions, yesterday only diarrhea was there, and today again vomiting ??? and fever. They said in the hospital in the infectious ward and children are lying in the resuscitation unit, now all are sick. Now I don't know what to do ? I give all the medicines, and he