Good Heavens Girl! I feel for you. You certainly have been through a lot of injuries and pain. You are a Very strong and determined Person. Unfortunately, I have no secrets to share for pain relief that you don’t already know about.
This year will be my 50th year with Diabetes. I was also dxd. with severe Rheumatoid Arthritis(RA) when I was about 24 yrs. old. That’s one Bad disease. I complain about it as often as I can. 
Severe RA is an autoimmune disease and happens to run in both sides of my Family so there are/were many Members suffering. None of them have Diabetes however, so their sugars are Fine but still the pain is there.
I have been on 16 different drugs for RA and only 4 or 5 put my disease into remission for a few years or so, then the severe pain and ridiculous fatique would start all over again.
I was just telling one of my Friends here that after 1 1/2 yrs. of being on a new drug plus 3 others, that they finally kicked in and I feel much Better. I still have pain but nothing like it was day in, day out. So I am in remission for about 2 weeks now, hopefully leaving behind the last 5.5 yrs. when my other drugs stopped working for me. I am So Happy but still cautious. I see a brighter future ahead. I may even get back into some volunteering again or perhaps a part-time job.
You know, one of my Cousins who was dxd. with severe RA when he was age 10, had told me years ago what he feels has helped him to feel Better. He stopped eating pork. A couple years ago, I stopped eating pork for a couple of weeks but I didn’t feel any Better. About 2 months ago little by little, I had started leaving meats out of my diet without realizing it. So now I’m wondering is it the longer span of time of not eating much meat or is it the new drug that has finally kicked in. My Rheumy did say that for a minority of People these drugs can take a longer time before they start working.
Sorry for babbling but I hadn’t put my thoughts about the meat in print before. I just thought that it was a Big coincidence regarding the difference in pain. You know all the junk that they put into animals like antibiotics and with genetically modified animals(meats), vegetables, etc. that the governments are allowing, who knows??? Nothing else has changed for me that I can think of. My sugars and A1c’s have been decent to Good for many years now. I do the same amount of exercise and so on.
Anyways, I sure hope that you get the much needed relief from your chronic pain. I know that it can do Bad things to a Person’s mind and soul. Good Vibes and Best Wishes to you.