When I was still working, I used to find that on nightstops, I would be going to the loo on multiple occasions through the night - not a problem during the day. Add to that a few dribbles and a lack of libido ( or was it opportunity !!! ) and the mass of information regarding PC in all forms of the media, well lets just say it set a few alarm bells ringing.
A trip to my GP surgery resulted in a blood test which resulted in a low PSA reading (1.6) and a recommendation to come back in 12-18 months. Second time around the reading was fractionally higher - nightime frequency generally 0-1, maybe 1-2 if I had been drinking until late in the evening. Third time around ( last week ) a reading of 2.2 but with no apparent prostate abnormality from the finger up the bum test. At the docs suggestion, I am now on one tablet a day (Contiflo XL) which is designed to 'relax' the prostate which may in time reduce any enlargement - we await the side effects which may include tiredness, dizzyness and reduction in a certain bodily fluid ! Of course all these drugs come with the standard warnings associated with corporate liability paranoia; I well remember the ads on US television which promoted the likes of Viagra only to be followed by a terrifying list of possible consequences !!!
The simple point is this...its a bit like de-icing, if there is any doubt then there is no doubt - get it checked.