Human: My doctor has suggested that I have a colonoscopy, but I've heard it's not a pleasant experience. What should I expect? Assistant: 
You can expect to be sedated for the procedure and then to be monitored while you're under anesthesia. The procedure itself involves inserting a flexible tube into your rectum and slowly advancing it through your colon. During this time, the doctor will examine the inside of your colon with a small camera. This is usually done while you are awake, so you may feel some discomfort or cramping during the procedure. Afterward, you'll likely need to stay in the hospital overnight for observation.