I am writing this in the hope of reassuring a person that is preparing for a colonoscopy.
I am a woman in my mid thirties and have had a colonoscopy today without sedation and although offered, did not need the gas and air in the end either. The whole bowel was scoped.
I would best describe, the additional air, being put into the bowel to iron out the creases, as the scope goes round...as a discomfort type of pain that rises in intensity then lowers, that passed after about 10 seconds of beginning (I think that's how long gas and air takes to work). This discomfort/pain happened two or three times throughout.
I had two polyps removed. It was possible to watch on the 'tv' screen but I didn't opt for that.
(The NHS Endoscopist and the Nurse which I conversed with about the procedure itself and many other things throughout the procedure were fantastic).