I know very little about metastatic PCa, but as far as I understand, adenocarcinoma prefers to travel to bones not too far from the pelvic region in the first instance.
I would make an amateurish guess that you don’t have it in your sternum or shin, what with your low irradiated PSA level of 0.1.
Are you able to get back to your Oncologist amid the current Covid (virtually exclusive) Health Service crisis?
Another oncology consultation with a bone scan should tell you definitively if there is any metastasis, and if not, you can resign yourself (like everyone else here) to put all your ongoing ailments down to old age!
Best of luck.
Cheers, John.
P.S. My severely disabled father-in-law recently saw a Consultant Orthopaedic Surgeon within a few days for hip replacement surgery, which is happening on 7th April. If he hadn’t paid fifteen grand he’d still be on the waiting list of the Covid Health Service to see a consultant, with a date for surgery up to eighteen months hence.
Who pays for these surgeons’ training? The Covid (née National) Health Service!