I checked with a bunch of biologists and all of them find the results here to be merely correlational and misleading. Have asked to wait for more evidence
1. It would help to know what doctors have said so far so that we can eliminate some from our hypotheses
2. I had a minor case of myofascial pain which has reoccured over 2 years but physiotherapy gets it down and strength training helps it stay at bay
3. However my girlfriend, who had a fundamentally similar pain has been suffering for more than a year and a half with days when she is bed ridden. It doesnt help that she's a biologist so her work at the microscope severely messes up her neck. The pain and stiffening keeps increasing, there's soreness and what have you. It is diagnosed as fibromyalgia.
4. The way we have gotten better at managing it is.
a. Physiotherapy. I can comment more on this once I know about how much of this maps on to your condition
b. Harm reduction of the occupational hazard(which applies to desk job folks too).
c. Very regular exercising
d. Majorly, diagnosis of nutrient deficiencies. She's been a vegetarian all her life so she was deficient in protein, Vitamin D and B12. Supplements helped with her recovery.
e. Some CBT. Chronic pain fucks your brain and muscular pain is exacerbated by mental distress. So mental health managrment is part of our stratergy for her.
Im sure this is super hard man.
Don't give up.
It's really about finding the right path.