My best advice I can give is try and relax, take a deep breath and put faith in the surgeon. I had a watery eye as I lay on the bed in the holding bay listening to the lady next to me rattle off all her ailments and medications. I started to think what am I doing here! Anyhow I closed my eyes, refused a tissue to wipe away the tear as I wouldn't let it drop and relaxed myself as I knew Prof was going to do a damned good job, after all he'd just finished drawing on my chest and he did!
I woke, thank goodness!! feeling ok with a nurse asking what I felt were dumb questions hence you have to be careful how you answer otherwise you can get them off side. I found the pain and discomfort soon eased and I only needed Panadol but we are all different in the way we react.
Best wishes, willing you along to a speedy recovery