I've been on holiday tuono so catching up with late posts and I see that again, your post is unanswered.
Personally I would have thought with a history of BPH the fluctuations in your PSA was caused by that.
Either way, you have now had the biopsy so the result will give a better picture.
Please let us know what the results are in the hope that somebody will finally respond to you
We can't control the winds - but we can adjust our sails