Question: when should you go to the hospital with gastro?
Answer: You should see a doctor the same day if you or your child are in one of the following situations: You have diarrhea which does not subside after 48 hours despite following instructions for rehydrating and eating when you have gastroenteritis. You have diarrhea and fever (over 38 ºC or 100,4 ºF) for over 48 hours.