Yes. I suffered fibromyalgia in my 20s bad enough that I was on disability, though now in my 40s it's in remission. Research shows a high correlation between trauma and fibro. There's also a correlation between childhood sexual abuse and fibro. I'm not sure "somatization" is the correct description of this correlation. Instead, it seems that fibro is somehow "sparked" by the intensity of the nervous system's response to trauma. Fibro is a real thing, likely in the muscles, though researchers to my knowledge haven't figured out exactly what's going on yet. They do know it's highly responsive to stress.
In my 20s in enormous pain, I felt desperate. But you can impact it positively. You can get some relief, if you make changes to your lifestyle and diet. Probably not full relief, but with this condition any relief is an enormous blessing. Researchers now know that exercise is incredibly important for fibro sufferers. I know it's likely the last thing you want to do right now. I remember stumbling around the block holding onto fences, because I was in so much pain from fibro, but needed to exercise. But within just a few years, I was riding my bike around to get places.
I had significant relief from fibro once I had a diagnosis. I did what the holistic types said I should out of pure desperation: I eventually gave up wheat, sugar, dairy, alcohol, caffeine, meat except for fish, substituting a diet of whole foods, and started exercising despite my pain and paying for massage even though I was on a very limited budget. It was not easy, but I had an amazing recovery. After a few years, I only had flare-ups at the change of the seasons. I'm no longer on a restricted diet or exercising much (due to other issues), but don't have symptoms at all anymore. I truly believe that the more I've processed my trauma (over many years), the more relief I've had from fibro. Also, there is a slew of supplements and vitamins recommended for fibro sufferers, though I didn't take them due to the expense.
It'd probably be good to get a book about fibro to start. I'm telling you about everything I did to heal, but it wasn't all at once. I started slowly. I first gave up caffeine. I still remember how hard it was. Even that small change though was helpful, and I felt just a little better. That enabled me to go to the next thing, and so on, and so on. Go slowly. But know that you can impact it. You can get relief. You just need some guidance, and that's where a book would be helpful.