Good luck with the colonoscopy. I've had them and no the prep is no fun, I'll try to remember the baby wipes/aloe next time I or my husband has to have one. The procedure itself, the drugs they give you usually knock you out or at least they did me. I don't remember wanting to yarp either, but everyone reacts to the meds and gas differently. I did wake for a very few seconds during my scope 9-11-01 but felt someone pat my hand say, "you'll be ok" and was out like a light again. At least it's better than they did nearly 20 years ago, I was fully awake for a similar scope. There are many benign things they can find and you may not find anything. I have IBS and diverticulitis, but not having the scope and missing something isn't worth NOT going through the prep etc. One suggestion, when you mix the drink tomorrow, if they haven't already suggested it, make it early and put it in the fridge, it's a lot easier to tolerate chilled. Hopefully you got a flavored mix.