@j9k Thank you for that; I enjoyed your philosophy! I have bowel cancer in the family on my father's side. My aunt died from it and my grandmother had, and my father has, a lot of polyps.
I've had Hashimoto's, an underperforming thyroid, since I was 37 when I was diagnosed and have been taking thyroxine ever since. So I already have an annual blood test for that.
I agree, knowledge is power and I trust that one day I will sit more easily with it as you say. At the moment it is yet another blow, and I dread the scanxiety... Big hug to you. K xox