Hey there comet
No disk replacement in my bod, just wanted to welcome you to this corner of recovery. I had brain surgery last Xmas, and I was plenty scared. Not that it has anything to do with what you're going thru, just letting you know you're not the only one to have that kind of reaction to getting cut up by some guy in a white coat.
I have a wonderful support group from my meetings, and those people where there for me every single day. Sharing with them, and following their suggestions, made a _huge_ difference in how I approached the surgery and the medications afterward.
Welcome again
Mike