Hello, Jon
This is a great site for information and compassion. Having a biopsy with your increasing numbers is a good idea at this point. If nothing else, than to quell any fears you might have. You can expect to have some blood in your urine, stool, and semen for a period of time after the procedure. My Uro gave me a local before doing it and then I counted the firings while he did the procedure. He took 12 samples. I was in no pain at any time, but some have complained of it. Each guy is different. He should call you soon after with the results and then...you do what you think you need to do. Hopefully, nothing.
Oh, and bring a little humor with you. I had a nurse who kept patting me on the butt during the whole thing, and that probably would have been OK if she hadn't been in her late 60's and looked like 5 miles of bad road. I know she was trying to comfort me but, it was creeping me out.
Afterwards, I asked the Doc to tell my wife that he didn't find my head up there.
Good luck and let us know,
Bob