thread Turned out OK in the end.
I'd been given a bum deal with the appointment forms, and just had a sigmoidoscopy, which just up up to the first turn, instead of a colonoscopy, which goes all the way to the other side. But I'd already been given a colonoscopy's worth of sedatives, so I drifted my way through it, all wrapped in fluffy clouds made of love. Came to in the waiting room, fully dressed, fiddling with my phone and drinking coffee. The very fact that I was hugely enjoying a cup of manky instant coffee attests to the strength of the sedatives. Am home now, smoking more cigarettes than is usual and still feeling a bit nicely buzzy.