I Have Been Having UTIs For Few Years On And

I have been having UTIs for few years on and off. But 10 months back I noticed a lump growing just below the urethral opening, and now it is covering the urethral opening. The opening is still there, but this protruding lump covers it. It is below urethral opening and above the vaginal opening, making the vaginal opening even smaller. Main problem is when I urinate I have this very very sharp pain like something is tearing inside. I went to the urologist, had blood test, culture, cystoscopy, MRI and also urethral dilation, at first I also had problem where I couldn’t empty my bladder completely and I have to push urine out. So the urologist diagnosed it as DSD and gave me pelvic muscle relaxers. And when I asked him about this lump, he said it’s nothing to worry about. At present, I can empty my bladder to an extent, that’s not a problem now. But this lump has got bigger and it is causing problem.the lump still exists
Sometimes the lump is small when its not irritated.
Pain is very SHARP and lingers for a while even after urination also have pelvic area pain
No discharge
No bleeding

Its pink same as the area around, size of a small pea, covering urethral opening, below urethral opening, hard, even harder when I urinate

It makes urination painful so I avoid going to the bathroom sometimes, and I fear it would affect my kidney, till now i am searching for answers online. but i had no luck, i found some people's questions about this on some forums, but no answer. i would really like to get an idea of what this is.