I have the exact same issue. In 38 and this started for me when I was 36. I have had 2 ultrasounds, both confirmed my bladder is not emptying. I have had one damn painful cystoscopy where bladder and prostate were normal, but the doc found a constriction at the opening of my penis. He said that might be the issue. Flash forward to today, nine months have passed and was given a medial stick to shove up there every night, stick pee profusely durning the day and at least once at night no matter how little I drink, nothing works. Going for a 2nd cystoscopy on feb 5 2013 for an update.