Yeah, like has been stated, nothing to worry about,........................they may give you "twilight sleep" medication (usually Feyntnal and Versed, the 1st being a light narcotic, the second being a benzodiazipam),.........you will be just on the edge unconsiousness but still awake,........they will most likely put a plastic "cage" in your mouth(to prevent you from biting down on the scope),.........the actual exam will take around 15 - 30 minutes and because of the meds you won't remember anything. Good luck,.........hope things get better soon.

"Any club that would have me as a member is probably not worth joining" -Groucho Marx