I'm 59 and just went through this last year and know of the anxiety you are feeling. When I had the procedure done, my urologist, first used something to numb the rectum, prior to beginning the procedure. Hope you get this prior to your procedure, ask your urologist for that prior to getting the biopsy, it really helps.
My urologist took 16 samples, because of abnormality on the right lobe of the prostate. Only two of the samples were sensitive.
Some of the things that will happen after the biopsy, is possible blood in the urine, only had a little bit for the first day, possible blood when you have a bowel movement, I had a little for two or three movements after the procedure. The other thing is blood in your semen which can last for a couple of months. My first time after it was blood red but this cleared up within a month. My main problem was a swelling of the prostate after the biopsy, I had this treated with acupuncture which really relieved it. No they don't put more needles in your prostate, but on your stomach area and few other places on your body and they don't hurt at all.
The best thing is after the biopsy results came back it was totally negative. Had a PSA done 3 months after the biopsy, it rose some, my urologist wasn't sure why since the biopsy was negative. Will have another examination in about 3 months and another PSA done then.
The whole area of PSA & prostate changes seems to be a bit cloudy, but it's better to keep up on things, so I'll follow the urologist's suggestions. One thing I would suggest is to read as much as you can and when you go to your urologist bring in your written questions. Have a friend, partner/spouse with you to write down the answers. You may not remember the answers because of anxiety. If you don't understand something, ask the urologist to rephrase it another way until you have a good understanding of what he is saying. Hope this helps.
Best of luck Plumber, let the other men on this discussion know how things went.