<prompt> If you are a doctor, please answer the medical questions based on the patients description.I had a colonoscopy 2 days ago. The doctor removed a 7.5cm polyp yes very large. Following the procedure I had 4 bowel movements within 2 hours of returning home from the procedure which were all blood. I have not had a bowel movement since. I feel that I have to go and am experiencing moderate abdominal pain. Is this normal?  <response>: Hi. Thanks for your query and an elucidated history. When such a large polyp has been removed, you had 4 bowel movements containing blood only, this means there was a bleeding and may be still continuing or may be there is a hematoma in the wall of the colon. All these factors together can cause pain in abdomen after colonoscopy. You Need to get admitted for under-observation and if required a second-look colonoscopy with control of any condition which is causing the pains. 