Hi,
Whilst it is essential you get your prostrate checked and follow all medical advice, PS is only an indicator of many issues and not only cancer.
I was on testosterone replacement for about 10 years, then my regular PSA test started shooting up. It was usually a constant normal at about 1.2ug/L (in the UK so your units may be different?). It raised to 3.2 and then 6.1 in 12 months. I sat in a endocrinologists office, and the FIRST thing he said was it could possibly be cancer, and with that rise in levels so quickly it was probably aggressive. Scared the unmentionables out of me. So had scans and biopsies and all came back clear. About a year later, as Oestrogen became the dominant hormone running my system my PSA plummeted (2.0). In June this year (Still on E) it rose again to 3.1 (below 3.0 is the cutoff), but with the earlier tests being negative I was told that while they will keep an eye on it, it is nothing to worry about.
The point is, I think now specialists are more likely to inform you of the cancer risk before anything, based on PSA levels alone. And PSA can be effected by lots and lots of other things. I believe this causes a lot of unnecessary worry in lots of people. PSA has a lot of false positives and a better test is required. (IMHO).
Anyway, as people have said earlier, prognosis is a lot more positive than it used to be even if it does turn out to be serious.
Hugs
Sarah xx