Friend of mine is 40 and self employed so he does not get a physical like he should. Says no need for it as long as he feels good. When he wrecked his knee, doctor did a full blood work-up. PSA was at 30. He had prostate removed, radiation and now just finishing chemo. I found my prostate cancer from my annual physical and caught it early. Had high dose radiation treatments only and now PSA stays around .02. And my radiation doctor is a very attractive female.
By all means, get it checked out soon, even if you are feeling great otherwise. Let the grim reaper wait many more years befor he gets you.