The tech wished me good luck and now I'm worried

I swear to god, if this turns out to be nothing, I'm going to complain to the hospital, because "Good luck with all of this, hon" is terrifying to hear when you think you're going in with a small probability of finding cancer.  Only time I've heard a tech wish someone good luck was when they thought my mother had ovarian cancer.  (She didn't, thankfully.)

Been having odd bladder symptoms off and on, mostly off, over the past year, but the last couple months it's been incessant.  Since there's been some odd debris that looks like bits of bloody tissue, a urologist sent me for a CT scan.

And now I'm convinced that either there's an alarming incidental finding, or I'm one of the lucky few to get bladder cancer at 38.  And if that's the case I've been letting it fester for quite a while now.  

Two or three years back I was told I had cancer.  Upon removal of the entire monster, it was downgraded to pre-cancer because it was so low-grade and well-contained.  So I'm constantly waiting for my luck to run out. 

It's frustrating to go in for a scan feeling like you've got this, only to have it knocked over by something so simple.  And I think it's weird of me to have anxiety over scans when my "cancer" ended up being...not that.