I'd take Lawink's advice. Of what little experience I have since being diagnosed, it's usually two or more factors that should alert one that there is a potential problem. My issues began several years ago with a weak urine stream and frequency of urination which were indications of an enlarged prostate. However, my PSA levels remained relatively low. There was no real alarm until my primary doc thought he felt something when he did a digital exam. Those two factors caused him to recommend a biopsy 2.5 years ago. The biopsy found nothing conclusive, but..... they said there were suspicious areas on the prostate. That caused me to get the biopsy redone again. And, sure enough, they found two malignancies.
Not being a doctor I'd strongly recommend you have a doctor look into this ASAP. You need to have some basic tests done of you have any concerns.