PS One other thing you might try. Hydrotherapy is another option. This could be painful when doing it, but may reduce overall symptoms.
If you have a flexible hose on the shower hit your prostrate area (area between anus and testicles) with one minute hot water then one minute cold water in as hard a spray as you can handle. Do this for 10 minutes, alternating every minute. If this helps, do it twice or three times a day.