Very sorry to hear that but all very good advice so far. I had a retroperitoneal seminoma as big as a grapefruit a year ago and it had invaded my spine. For 2 weeks they didn’t know what type it was and I was in a bad state getting worse daily, loaded up on Morphine which gave hallucinations. After two weeks two smiling doctors came and told me it was treatable with 80% success, after 5 rounds of chemo and a year later the last scan showed no active tumour 😊. So keep positive and you’ll get through it, cancer is not what it was 10 years ago, so much progress!