I think your problem is TMS. Among the other TMS symptoms I still have, I also had bladder, prostate and other urinary tract related problems for three years. The difference was that I had episodes. But these episodes grew in duration and frequency during these three years. The first episode was spring 2012 and I went to a urologist who prescribed me antibiotics because he found leukocytes in the urine. After 3 weeks it was over. Next year 2013, again in spring, followed the next episode and I went again to a urologist. He prepared a culture to see if it was a bacterial infection but I should start right away with antibiotics. Again in spring! I found that suspicious and decided to wait for the outcome of the culture. As I suspected, the culture was negative. I did not take the antibiotic but this time it lasted four weeks. In 2013 I also had another episode in autumn. In 2014 it was spring, summer, autumn, winter. And the episodes were longer and worse. The worst episode lasted two months. During these episodes I always had the urge to urinate and everything down there felt cramped, burning and hypersensitive. It was a nightmare to drive a bike (which I have to do every day to go to work), even the tiniest bumpiness on the route felt like a shock in my perineum and prostate, so I had to drive standing.
To me it was obvious that it was TMS related. It was as if my prostate and bladder were so stressed (how I was and still am) that they needed only a benign trigger to freak out completely: be it the change of season, swimming in the sea during vacation or if I had to hold urination for too long on a car ride. I recommend that you address it like TMS. But I also recommend, no joke, green tea! Even though in my case it was clearly stress induced and I still struggle to handle my life stressors and my other TMS symptoms, green tea helped me tremendously in this case. During my last episode I remembered that in the past I used to drink green tea more frequently and that it always has a diuretic effect. So I thought, why not flushing the system, it can't do any harm. I drank like 4 cups a day and after one week it was gone! After that I decided to drink at least one cup each day also without having symptoms and once I sensed a slightly unpleasant feeling in the urethra (that's how it usually started) I drank again several cups a day. I have not had it for 2 years and now I only sporadically drink green tea (addicted to coffee). I cannot guarantee that it also helps others with similar problems, but what a cheap and simple try without any side effects. It does not even have to be special, organic or somehow certified green tea. Just regular green tea did it, like 2€ for 30 tea bags. By the way, green tea has indeed been proven to relax smooth muscle, alleviate prostatitis and to inhibit viruses and bacteria.
Cheers