I had it when I had food stuck in my esophagus. I was nervous before because it looks like quite a serious procedure but it was done in about 2 minutes including getting 3 biopsies. You get a back of mouth spray but mine went on my tongue so I had to try ask for another with a numb tongue lol. Take the sedation they offer, I was nervous about that thinking I would talk absolute **** or something but it wasn’t like that it was fine. It is moderately uncomfortable but after a minute you calm down and let them get on with it. I was fine about 5 minutes after in terms of coming round from the sedation (I don’t think they used much tbh).
Turns out I have eosinophilic eosophagitus so i will be getting food stuck again and will be having more endos but the 12h wait is much worse than the procedure.

Now the old fella knew what was coming and had tried to make an escape inside me. I just had to lie there and think, thanks a ****** lot
Then for the final insult the doctor fills my bladder with saline so he can inspect it. I now feel absolutely desperate for a pee, to the point I'm holding it in as it feels like if i don't it will gush out all over the doctor. I'm that desperate for a pee I then get a stiffy 