I too had NO hint of a problem, but most certainly had a significant cancer.
My brother, who had PSA tests (previously negative), had an early test, and he too had the same severity of cancer.
As the others have suggested - just go with it...
I suspect that you are on the antibiotics to ensure that there is no urological infection that has spiked the PSA..
All the best and Merry Christmas !
Nov 2009 = First-PSA 5.3 @ 60yo - Asymptomatic - DRE-Non-Palpable
Jan-'10 = TRUS Bx DX - AdenoCar T1c - GS(3+3)=6 , 5 & 45% max., L-MidZone
May-'10 = RRP-Nrv-Spare
Post Op. GS(3+4)=7, 1.1cm3, Pos Margins, EPE (focal) Lateral Left
Margin-Involvement (extensive) Posterior , Grade3 x 8mm
+8week PSA<0.01, ED-85%, Incont-30%
+16W PSA<0.01, ED -85%, Cont -5%
+17W First 'DRY' day. ED -90%