Pain in perineal region and subsequent erectile dysfunction - #9141

3-4 years ago I developed mild discomfort in my perineal region which radiates, to my penis, scrotum, and basically the whole pelvis. but since it was only mild I didn't put much attention to it and went on with life, the mild discomfort had slowly transformed to significant amount of pain causing issues with my ability to life a regular life,like inability to do work etc, the pain also makes me unable to get erect because it distracts me.it had also caused low libido and sexual anhedonia. Under the recommendation of a urologist before, I got whole abdomen ct and penile and scrotum color doppler, and both these tests didn't show anything wrong, I wasn't to ask you Dr.s, what could this be? What are the exact diagnostic tests which will help me figure out what's wrong with me,so I can get it treated? Thanks