This all sounds quite stressful mgran.
But it's a good thing you acknowledge this and get it off your chest - not everyone does!
Try to focus on what you achieve despite the stress and everything that comes with it. You made it to the interview You are doing really well. One day at a time! I hope you don't get a bad reaction to the sedation but don't worry about what you might say while under, your health coordinator isn't just anyone, they wouldn't pay attention, or judge.

Take care and remember you have support for whatever comes