Welcome to the board.
I think that you can take part of Kcon’s post above as an answer to your case. Your PSA though is higher than Bryan and you are younger. Another thing you should consider is that in prostate cancer no two cases are equal but similar. What works for one may not work in another.
The worrisome in your case is that the doubling time of PSA is short at 7 months. Anything below 16 months requires close attention and proper check-ups.
Nevertheless there are cases where the increase is due to other causes such as infection or inflammation.
I would recommend you to discuss with your doctor on any possibility in taking anti-inflammatory/antibiotics drugs for a period of three weeks and follow with a biopsy if the PSA does not decrease to within the normal levels.
In any case, there are many ways to “fight” PCa and you would do well if such is needed. Being anxious is not a good beginning when handling the problem. Be positive and research or read books on diagnosis.
I recommend you a copy of the “Primer on Prostate Cancer, The Empowered Patient’s Guide” by Dr. Stephen Strum and Donna Pogliano.
You can also prepare a List of Questions for your doctor before your next visit.
I hope this is just a “bump” in your life routine and things turn out to be OK.