Welcome! I'm so sorry to hear about your cancer fight. I don't have cancer, but I have used the PB to keep my mother healthier for her battle with ovarian cancer. Research says that cancer cells feed on sugar and things that easily convert to it. It can only help.
I myself almost died a year ago at age 43 of Pulmonary Emboli. The clots formed in my legs, in veins damaged by years of inflammation; moved through my heart and lodged in my lungs. I was lucky; 35% of people don't survive their first incident. PB is a huge part of my "stay alive" plan.
I wish you luck. Please post often and feel free to ask questions as they come up.