Outpatient surgery without pain meds and my pump

Hi all, I'm scheduled to have in office female surgery in a few weeks. I am unable to take pain meds due to severe reactions. My surgeon says the procedures will likely be "very uncomfortable" and has prescribed xanax and motrin 800 for the morning of. Just wondering if anyone has had experience with pain and blood sugar fluctations? In my experience adrenalin causes my BS to skyrocket followed by a huge drop. Should I set a temp basal rate? Go in with a slighty elevated BS(140 or so)? Should I just turn on the ipod and pretend to be somewhere else? Any suggestions would be greatly appreciated.