Hello I appreciate your concern and I will try to help you out in best possible way This could be an undigested food particle or remnant of drug if you have taken any? This can be caused by food poisoning or gastroenteritis, colitis or food allergy. I would like further information to help you better like Your age and relevant medical history have you taken any medicines or adulterated good Since how long you have this problem? Meanwhile please follow these guidelines Have lots of fluids including ORS to counter dehydration and electrolyte imbalances Wash your hands with antiseptic soap or solution to maintain good hygiene Avoid fatty fried junk and cold food Please revert back to me with answers I will be happy to help you Best wishes