Sorry I don't have much time to give tips (I use my ipod), the place I get mine usually offer valium. If you call them to express your level of stress/anxiety they may tell you to come 30 minutes early and get to take a valium. A friend of mine takes Tylenol PM and sleeps through them. I just use my ipod and turn it up really loud so I don't hear the machine (its the machine sound that freaks me out).