hey,
I have lots of surgery dreams, like people have said here its your mind trying to work through things I was doing pretty good for a while, but they started up again, when I thought about it I realized its because I have a few followup appts coming up that I am nervous about I also find that alot of my dreams are really subconscious memories, but sometimes they are pretty warped, the last time I had open heart surgery I was 4 years old, so some of the dreams I have had were from that perspective, it took me a while to realize where this stuff was coming from, but before my ablation in march alot of these dreams came back, and I realized that it was alot of subconscious fears I had about the procedure
hope this helps