Jan, please refrain from sharing personal issues here as we all have our crosses to bear. And you know I'm kidding about something I only know about from the peripheral vision of life. I use and abuse the fine folks in this thread more than anyone but I think that was part of the intention, from what I know of the type person Pops was.
Runny's advice is the best, distract yourself as best you can and when you feel your mind going where you don't want it, start talking to yourself out loud with as many affirmations as you can and know above everything else, you beat the monster before, you know how and you are not the person you were when you first defeated it, you are better and stronger, if you get the news you do not want.
When my wife was going through treatment, a different door to another world opened up. I was witness to the strongest and toughest people I've ever known, and the majority of them women. You have that strength but fear of the unknown can be as challenging as the monster itself but you will defeat that as well because you took the first step, getting that out in the open where you can deal with it. Fear grows best when it hides.
I started out trying to lighten your load a little but know this. No need to apologize or even explain how you are feeling because this thread isn't about posters, it's about people. I am a pretty shut off from the real world person and if I can share my feelings while not being remotely at the level of yours, you certainly do not need a disclaimer. You have friends right here in your corner and pulling for you and when I post something from inside myself, I immediately feel better because I feel people in here care about me. You will be in my thoughts until you share the good news with us about the results of your scan. Then, I will celebrate the good news.