Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have symptoms of diarrhea and belching which seems to be due to disturbance of electrolytic balance of body. Well there can be many reasons for symptoms you mention in query like gastroesophageal reflux disease, food intolerance , food allergy, bacterial or viral infection , parasitic infection or inflammatory bowel disease. Need not to worry. You should not lay down immediately after having food. You should walk and exercise daily. You should take small quantity of food and avoid large intake at a single time. I would suggest you to consult gastroenterologist for proper examination . Doctor may prescribe antibiotics like ornidazole , albendazole , omeprazole along with loperamide. You should eat light and non spicy , eat fresh fruits and vegetables and eat fruits like banana. Take oral rehydrating solution as well. Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari