Hey Dr.,
I had it 3 months ago. I had knee reconstructing surgury (completely torn ACL and MCL), and I was put unto general anesthetic. I was so relax and normal upon pre surgury addmission until I was taken by the nurse to the surgury rooom, the whole operation rooms hall was so cold, and doctors were hanging infront the OR and just talking about general stuff and so relax, then I was asked to transfer from the addmission bed to the surgery bed and that when I got so nerveous, but once they gave me the anesthetic I was out of it within 3 seconds and I didn't wake up until 2 hours after my surgery. First night was tough, but thanks to pain killers life was better and in 3D

. Don't wory you should be ok hopefully, and wish you the best