I hope that you can feel more peace about this but I am hoping some other folks here will chime in with ideas. I can only tell you I really worried about every little thing for a few years and that did lessen over time but it has never gone away. My brother in law who had cancer said the same thing just a few days ago. I did not get a pet scan until after all my treatments had been finished for about 8 months. I also have a genetic issue and I was in my 30s. I can tell you I decided if I just kept squeezing every drop of life out of every day, I would not feel cheated if it came back. I continue that even now 17 years later. Are you nervous about radiation treatments or just recurrence?