<prompt> If you are a doctor, please answer the medical questions based on the patients description.My stomach is hurting and Im pooping so much that I will have gone to the bathroom 4 times by the time 10am hits...what can this be? p.s. I had gastritis when I was younger from eating too much acidic foods and the pain is the same but I never deficated this much  <response>: Hi. Pain in the stomach and the frequent motions are suggestive of gastroenteritis. You have to take a course of an antibiotic and metronidazole and supportive treatment. IF there is no relief within a few days I would advise the following:Blood-complete blood picture, kidney functions tests, blood sugar fasting and post-lunch, Urine-routine, microscopy, culture and sensitivity before start of antibioticUltrasonography of abdomen. If required a colonoscopy too is also warranted. Your Doctor will add medicines to tackle the problem of acidity too. Go for upper GI Endoscopy once at least for this. 