I am so glad I found this forum as it has made me feel not a complete idiot. This morning I had a colonoscopy for suspected diverticulitis. I was given fentanyl 50mcg& midazolam 2mg ( sedation & pain relief).i am 60 and hv had various procedures thro the years but hv never experienced pain like it .. they only managed a third of the way into the colon and I had to get them to stop. It was utter agony and I was even screaming. like previous  posts I am not a wimp (having suffered severe endometriosis and getting hysterectomy and ovaries removed at 29 .) I used to pass out with the pain so I feel I hv a fairly high pain threshold now. I really think the procedure needs to be looked at and the sedation and pain relief reviewed , as like many have said it did nothing at all for me . I ended up in tears which is not like me and will certainly not be having another colonoscopy. I feel actually traumatised by the whole thing,,, which is just not me . I am very much a “ get on with it & stop complaining “ person. Thank you to all who hv shared there similar posts on this procedure as you hv made me feel less emotional and embarrassed due to the fact I couldn’t continue. The nurses were lovely but no one said that this had happened before making me feel rather pathetic at not carrying on with it.