I see that you are from Fredericksburg. Even though this site lists Richmond as my address, I'm an hour and a half away from there.
The previous answer to your question is a good one. I cannot add to that
If you are recently diagnosed with colon cancer, I have been where you are right now. I was frantically asking the same question. Mine was a stage 3C. There are a lot of people on this site that are a stage 4 and have been for years.
Many factors are involved.
Write back and tell us how you are doing.