Hi, LemonSys, and welcome to MSF! I'm sorry you need to post in the pain area. Don't give up hope! I agree with Liz's car analogy. I think of a car with different parts that break down and need to be worked on.
I have some undiagnosed pain, but I do take prescribed opiates and rub the painful areas sometime with various kinds of pain-reducing creams or gels.
I'm not familiar with the problems your docs say you have, but I do know all sorts of pills and treatments are being recommended. Of course, concentrating on the pain doesn't help. I find that distracting myself, even by coming to this site, helps me.
I had a knee replacement a couple of years ago, and my knee does still hurt sometimes, even though the X-rays "say" everything is fine. Pain might be a sign that you're healing and that takes time, especially if the doc really tinkered in that area.
As Liz also said, you might head to a primary care doc. I've been amazed at what they suggest, including the type of specialists to go to.
Hope I helped some!