I had a colonoscopy because it's recommended that you have your first around age 50, if you haven't had one before. It was a walk in the park! I don't remember anything. My husband had one, and when he felt some discomfort the doctor added more drug to the IV and he went out. His doctor said it was uncommon that he didn't go out right away. They don't want to work on you if you're uncomfortable, it makes their job harder. Good luck!