I have had 3 endoscopes - all with sedation (no problems at all, not groggy afterwards or nauseous). However the last one I had I was not sedated enough (no idea what went wrong), and during the latter part of the procedure, was aware of everything they were doing. I would say it was uncomfortable, (very similar to having dental work done) but nothing more. I can't believe that the hospital are not offering sedation; a work colleague attempted to have hers done without sedation, but just couldn't manage it, so they sedated her, there and then. Good luck MissAdventure - you have had a cesarean section and survived, this will be a walk in the park compared to that!