Sorry to hear of your situation,like Evan said all you can do is stay vigilant and take care of yourself as best you can.
We recently lost a good friend at work.He died from Liver cancer that resulted from stage 4 colo-rectal cancer.It runs in his family,his father,mother,two brothers and one sister all had it.He never got a colonoscopy when he turned 50,if he had they may have caught it early.
All I can say is if someone here has a family history of cancer then please go through screening.Prostrate,colon and pancreatic cancers are stealth killers.You seldom ever have symtoms until it's too late.
I have two relative on my fathers side that have had colon cancer.Even though they both had it late in life I have decided to get checked at 40 instead of waiting until 50.
I just need one more tool,just one!