You have been fortunate to have been closely monitored and I guess the trend is there for the experts to analyse but bearing in mind this cancer is slow moving and there is need to consider all the tests and checks.
We are in a similar situation, my husband’s PSA has risen to 10 at the last count but his oncologist is wary of recommending a treatment instead he had to have scans, another test etc before finally deciding what is the best option. Apart from steroids he hasn’t had any medication since last June and it was enzalutamide which didn’t work out well for him, so we’re now back to considering our options.
I know it’s so hard to be patient but it’s the name of the game I guess we’re used to it after ten years .