Hi Greg,
I had the colonoscopy and the tests like you. It turns out I was clear, but I had to go to that place in my mind. So, I have some idea of how you might be feeling.
There is a lot of help and support out there as soon as you mention the 'C' word. Also, you sound like a very strong guy, Greg, and everyone here will be feeding that strength.
Good luck
Myzen