Pain for 4 months since last session

I was a semi frequent user of my aneros and never really had any issues until one evening I did a 2 hour session. The next morning, I had a very tense aching pain extending from my tailbone area through the butt crack area (and part of the cheek) perineum and up to the base of the penis. All of these pains are strictly on the right side. It feels more like sharp pain when tending up my pelvic floor muscles or when going from sitting to standing or vise verse.

I thought maybe I just pulled a muscle, so I waited for it to heal with time. It’s now been 4 months since the pain started and it hasn’t stopped. It’s not as severe as day 1 but it’s felt like it has plateaued and not gotten any better. I saw my family doctor last week but she thinks a urologist and prostate exam would be a better route. She had no clue on what’s wrong with me. Anyone here had chronic pain come from a session like what I’m describing?