thats what i came here to say. you can actually go up to them and say, "i am nervous, do you have anything to ease my nerves?"... they will respond with "yes, we have drugs, you can take them and have no pain or anxiety."
strong stuff they have, i know because of a personal experience with getting a chest tube put in, which was a chill one due to bro nurses who gave me drugs. just remember to drink water for sleeping on painkillers, you sweat a lot for some reason when working them off. but who knows, they could have a different drug schedual (for lack of a better term) for you.