I've had severe chronic pain for approx sixteen years now, since the age of seventeen. Pelvic.
TBH the only thing that has ever helped has been painkillers, strong ones. I was under the pain clinic for several years working up a ladder of different surgeries, interventions, medications and procedures to try and find the least extreme option that would provide some relief.
Eventually my treatment plan ended up being 100mg of morphine per day, antibiotics post-coital (I get UTIs every single time I have sex otherwise), drinking a lot of water. That's it. Still in a lot of pain daily but it's actually manageable. Prior to being on any pain relief my life was a bit of a mess, so much time off work and almost losing jobs, relationships badly affected. Now it's much better. I have to deal with the side effects of being on such a high dose of morphine on a day to day basis but the side effects are less of an impediment to my life than uncontrolled, constant extreme pain.
It's a balancing act with chronic pain, always. Trying to find the thing that works that doesn't also wreck you life. Other meds worked better (buprenorphine, ketamine, nabilone) but the effects of those was so horrible it was impossible to go to work so just not an option for me.
You should get a referral to the pain clinic if you haven't already and be steadfast that you need proper treatment. I can't tell you the number of times I was fobbed off because the issue causing the pain wasn't always visible. Treated as a drug seeker, as being hysterical because I was a young female.