Hi Dear, Understanding your concern. As per your query you have symptoms of diarrhea along with nausea and vomiting which seems to be due to disturbance of electrolytic balance of body due to parasitic infection or inflammatory bowel disease. Need not to worry. I would suggest you to consult gastroenterologist for proper examination. Doctor may order stool test to find out exact cause and prescribe antibiotics like ornidazole , albendazole along with loperamide. You should not lay down immediately after having food. Drink plenty of fluids. You should take small quantity of food and avoid large intake at a single time. 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