You have certainly been through the wringer! I have MCTD, and my best advice is to get PT from a manual style person. Yoga/isometrics/pilates have done wonders to relax, loosen and strengthen muscles around degenerating joints, some of which slip out of place. I've tried the shots, but in comparison to the movements I've learned, the movement wins. Meds and the shots work in combination with activity, but alone never do the job. Like you, I have ice/heat packs, lidocaine patches, KT tape (you tube directions) to rest areas, CBD ointment, biofreeze, magnesium spray and it gets even more peculiar from there. The best bed for me is a spring type, with a 3lb density, 3" thick. You might check into MRI side effects; the only one I had really was trying to adjust my breathing to the drum beats of the machine, and they can give you valium. I was there after concussion.