We’ve all been there, Tim, and you’re NOT alone - we’re all here to offer support. The first thing to say is don’t assume it’s cancer - there are many conditions that can result in raised PSA, but looking at cells under a microscope is the only way to find out, hence the biopsy. Even if it does turn out to be prostate cancer, don’t worry about it too much. It’s a very treatable condition, and localised PCa (where the cancer hasn’t spread outside the prostate) is vanishingly unlikely to kill you - the overwhelming majority of men die with it, not from it.
As Barry suggests, download the information about PCa and its treatment from this site. If you have any medical questions, give the PCUK nurses a ring on the Freephone number at the top of the page - they’re very helpful.
Don’t worry about the biopsy. Presumably it’s a TRUS biopsy you’re having? Believe me, the anticipation is far worse than the event! In terms of unpleasantness, I’d put it roughly on a par with having a filling at the dentist. There’s the same scratch as local anaesthetic is injected (it’s the same anaesthetic that dentists use) and then just vibration as the spring-activated sampler is used. You’ll have blood in your urine for a week or so after, and in your semen for perhaps 2-3 months. Nothing to worry about.
Hope the biopsy goes well and don’t hesitate to ask if you have more questions or concerns.
Very best wishes,
Chris