Hello, Severe pain upper abdomen with blood in stool indicates acute erosive gastritis most likely which may be following side effect of certain drugs as antibiotics or other food stuffs with high spices. Following measures will help better way: - Consuming clear liquids - Prefer bland, vegan diet - Avoid all spices, non-veg, junk items, dairy fat - prescription of proton pump inhibitor as omeprazole or Pantoprazole with sips of water on empty stomach, antacid syrup as Mylanta or others - Avoid smoking, alcohol if consuming - Avoid stress and anxiety - Manage sound, regular sleep of 7 hours Regular follow up with your primary care is essential as there may be future need of upper GI endoscopy in some cases, though decision subjects to the outcome of above measures. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel, General Surgeon