Hi. Thanks for your query. Noted the history and understood the concerns. Blockage of colon, chronic watery diarrhea can be due to many a reasons like: Cancer of colon. Fecolith impaction. colitis and so on. Until colonoscopy is done after 2 weeks as per an appointment go to ER or Urgent care. Clinical evaluation, examination and investigations like X-ray of abdomen, ultrasonography and tests of stool, blood and urine will help to know the cause. Even a Ct scan of abdomen may help. I think you need a Saline-soap enema for clearing the stools. A course of an antibiotic, metronidazole can help. Take probiotics. Avoid the foods and beverages that instigate or enhance the symptoms.