Welcome to the board, which I hope you will not need for long!
I've read all the posts but am responding to your latest, #7. It appears you have not been diagnosed with prostate cancer but are concerned about it because of the rise in PSA.
You are doing the right thing by seeing a doctor in a few days. There is a possibility that you have a prostate inflammation or infection that did not show during the workup; either could easily cause the rise in PSA independent of any prostate cancer. On the other hand, the coincidence is not reassuring.
While your prostate may have been diminished due to the undersupply of testosterone, it is quite doubtful that it would have rebounded enough with healthy tissue regrowth to cause a PSA of anywhere near the high eight range. However, there could be a combined regrowth plus infection effect.
Of course, prostate cancer could also be involved, unfortunately, and that too could explain a sudden surge in PSA resulting from a sudden boost in testosterone.
My own PSA rose from 113.6 to 125 due to a temporary testosterone surge resulting from a Lupron shot in the setting of a lot of cancer within the prostate as determined by a PSA "snapshot" one week after the Lupron; it might have risen even higher if the snapshot had been on a different date, prior to the plunge in testosterone that results from Lupron in about two weeks or so.
I hope your exam turns out well. Regardless of the result and possible follow-up biopsy if needed, keep in mind that there are many excellent treatments for prostate cancer. Also, survival for white men, based on treatments from 1996 to 2004, was 99.4% at five years; the figure for black men was 95.9%. Even men with high-risk cases usually do very well, with 95% still surviving at the ten year point.
To me that is wonderful news. I hope it gives you some comfort.