Hi,
I'm almost exactly 2 years ahead of you with a G9 (4+5) N1 M0 Dx in April/May 2018 PSA was 78 but rose to 108 at the start of treatment. See my profile for a more detailed account of my journey so far but here are the brief details.
Started HT and 6 sessions of Docetaxal Late June 2018 and by November 18 PSA down to 1.1. Tolerated Chemo pretty well only a few days where I felt I couldn't work. I'm a builder who buys and renovates flats/houses doing a lot of physical work.
PSA started climbing slowly after chemo finished but nothing that alarmed my Oncologist. However last summer there was a more pronounced increase which has lead to me being prescribed Enzalutamide (Another type of HT) along with my original HT which did not seem to be able to suppress my Testosterone on its own. 5 months on PSA dropped from 13.9 to 1.2.
Try and get yourself on to the Stampede trial. Even if you only get on the control arm it means you are guaranteed at least 3 monthly check ups for life.
Above all keep positive and listen to your body. If all feels OK then just keep on doing what you would do normally. However if you don't feel too good take a rest and see if you feel better after a while. If it continues talk to you medic team.
Best wishes
Andy