Re: new here... question re: fibro & kidney/bladder issues?
I had numerous UTI's through the decades. My favorite urologist told me way back in the eighties that they were suspicious that cranberry caused kidney stones if used too much. That was a long time ago, don't know what was decided. For all i know it was all of the corn syrup in the juice. Stones and uti's are different creatures, also.
Ten or so yrs ago I had lots of pain without blood in urine. Still have it frequently.Was a new town and new doc. He said that the part of my bladder that says it's full gets inflamed. Also said he sees that in people with connective tissue disease. I have elevated ANA, so that fits. There's an over the counter med that's been around for decades to relieve bladder pain until you figure out what's going on with a possible uti. That doc prescribed a newer one for me and my inflammation, called Urelle. I have no idea if they could be of benefit for a problem like you're having. Need to have doc you trust, for sure. Read doc reviews, as always.
Some doc's would always want to dilate my urethra by cutting it at office visits. The favorite doc said don't let them do that over and over. (He had done it once in surgery). Said it can cause a build up of scar tissue, which is counter productive to the idea of making it wider.