Hi,
I too, can relate. I have a lot of physical abnormalities, mostly congenital. One such thing is Bertolotti's Syndrome, which more or less means that my sacrum and lower vertebrae are fused together, causing a joint that is not supposed to be there.
As a result, I have excruciating pain in every part of my body. It has gotten worse as I have gotten older, I have had pain since I was in my teens. But I have spent my entire adulthood in excruciating pain that nothing really helps or alleviates (or not much, at any rate). I can't function the same way others can who are my age (I am 34 now, so in a similar boat as you, but it is been incapacitating since around age 19 or 20), my energy is limited, and moving and therefore getting anything done is difficult, even with exercising and Tylenol 3s and muscle relaxants. The joint that isn't supposed to be there causes severe pain and inflammation, I can't stand for even 2 minutes.
It causes pain in all the surrounding muscles in my glute area, so I have burning pain in my legs and extremely tight leg muscles and pain all throughout my legs, and cascades all the way up my back, (also my neck, shoulders, and jaw) which also affects the muscles in my chest and abdominal area, my whole torso. I have great difficulty going up stairs.
It also effects the ligaments and tendons and muscles internally.
I've tried everything from chiropractic to massage therapy, exercise, prolo therapy, intramuscular stimulation, neurofeedback, I have seen a rheumatologist, gone to the pain clinic, and a surgeon. The same thing every time: Good for you, you are doing all the right things, and that's a real battle for most people, but there is nothing we can do for you.
Some people might characterize what I have as fibromyalgia, but, my dr who has been treating my pain for many years, and myself, think it--whatever "it" is, is mechanically induced (ie due to malfunctions and abnormalities in my body that do not happen to most people).
There was a period this doctor was adjusting and "un-sticking" my tail bone, which gave me a lot of relief in that joint, and my massage therapist said whatever we were doing, we should keep doing, because it was having a significant effect on my muscles, and they were loosening up. Unfortunately, this required an internal adjustment which was unpleasant for him and excruciating for me, and only lasted a week before it would go back to it's "stuck" position and eventually he did not want to do that any more, and I could not blame him. It was not like it lasted a few months, and wasn't any great joy to me either.
So, you have my greatest empathy... It's definitely one of those things that people just don't understand unless they have lived with something like that.
I'm sorry that you have to join the club :( It really sucks.