I have just had a colonoscopy on 29th Dec and it was excruciatingly painful so much so my body went into shock and I shook uncontrollably throughout. I had been given sedation but I felt nothing from it so can only presume it didn't work or they didn't give me enough. I was crying out in pain and was given gas and air. Unlike a lot of other posts my doctor was very sympathetic and even came through to recovery to make sure my shaking had stopped. He explained the pain was more than likely from previous surgery from a hysterectomy which can cause scar tissue. I do think there needs to be more awareness about the possibility of pain as I was completely blindsided. It was excruciating and no mention of this in any literature I had read prior to the procedure. Just to mention they think a polyp they found could be cancerous and I'm being rushed through the system so not sure if the pain had anything to do with this.