Anaesthesia Question

Hi all, long time lurker first time poster. I’ve suffered from moral scrupulously/POCD for a very long time. I am looking into getting top surgery and have only ever had my wisdom teeth removed. This would be my first major surgery and I’m terrified of what I might say under anesthesia. Like I’ll somehow reveal every awful thought I’ve ever had and then everyone will know I really am a terrible person. As you can imagine it’s quite worrying as I know top surgery will also greatly improve my mental health.

All this to say, has anyone else ever had this panic and if so were there any exercises that helped or any advice you can give? The thought of going under and not having any control over myself is barring me from even making a consultation appointment.