Hey Sirona,
I hate to say this.........but what you're going through seems to be perfectly normal....even if we aren't normal persons! You've had trauma, you're healing, you worry about more trauma. Yep, that sounds normal to me.
Btw, my sister, Patio (please feel free to email her) is a survivor of cancer - about 3 years now. Had the surgery, chemo, radiation, really lousy health for a while..........and she's doing fabulous, imho. But not 3 months after surgery, she wasn't. And yes, it took her a Long Time to get used to the idea that everything is not cancer.....but the doctors have to check it anyway.
I'm telling her funny story now: She had a soreness in her upper back/neck area within a year after the surgery. Of course, the doctors had to check it out - and she suffered for days worrying about it. The diagnosis came it....it was arthritis. The doctor was so glad her cancer hadn't spread. Patty's worried response? "But what about the arthritis?" Docto sighs: "Live a long happy life with it."
I haven't had cancer.......but damn! I've had infected teeth/earaches/throat stuff all my life. Please take care of it pronto? An absessed tooth won't have you grinnin' for a couple of weeks!
Take care - waiting