Once your diagnosed, I believe they point you towards support groups and there's usually a person who helps along.
Telling others is the hard part. My step mom told me along the way. Tell someone what's been going on and that you may at risk of cancer.
Chemotherapy will be hell, but having someone there to support you will make the journey a bit easier. Don't give up hope.
Your doctor will elaborate more. That's the most I can give you, since I don't have cancer, but my step mom does and this is what she's told me.
Don't give up hope and stay strong