I was 45 when first diagnosed.....39 would be one of the youngest I've heard of, but you're on the right track. Read up on this stuff a bit, BUT DON'T LET YOUR IMAGINATION RUN WILD --- been there, done that and it doesn't help!
Since you're getting this all checked out, just assume you don't have PC...(easier said than done!)....but even if you have a problem, this is a very manageable afflection for the vast majority of sufferers...HANG IN THERE!
Initial PSA march of 2006: 28
PSA May of 2006: 39
8 of 12 cores malignant
Open Radical Prostatectomy 6/9/2006
Pathological Stage T3a, Positive Surgical Margin
Post surgury PSA fluctuated between .04 and .09
PSA rose to .24 in November of 2006
6 month hormone therapy initiated December 1. 2006
36 sessions of IMRT Ended Feb 1, 2007
PSA as of May 25, 2007 undetectable
Next PSA November, 2007