Have you considered prostatitis? That can mask as an UTI sometimes
I was thinking what Facundo was thinking - prostatitis. Has anyone done a PSA test or a prostate exam?
When they treated you for the UTI, did they find bacteria in your urine, or just blood? Protein? Anything?
In any case, can you get to a urologist? They can treat you for recurrent UTIs, if that's what you have, or an infection in your prostate, or inflammation or whatever is happening.
Let us know what happens.