I understand totally what you're going through. I had a very large lung tumor treated with chemo and radiation in 2008 and was cancer free for ten years. In 2013 I was diagnosed with bladder cancer but treated successfully with BCG. Beginning in 2018, I've had four malignant lung nodules we've radiated, and this one we re-radiated because it became cancerous again. This week I learned through an MRI it looks like I now have prostate cancer as well. This disease has become a nightmare for me; getting tired of fighting this battle that never seems to stop. After this experience with pneumonitis, I'm really reluctant to begin immunotherapy after hearing about all the negative side effects people are having.