The pains in your legs and arms could be peripheral neuropathy which is caused by several things, an autoimmune disorder called CIDP being one of them. It is rare, so many Drs know nothing about it. It causes numbness as well as pain and eventually muscle weakness. It took me about 12 years to get diagnosed. A neurologist is the Dr to see to rule this out. A rheumatologist is also appropriate to rule out any other associated AI disorders as they tend to occur in multiples. I think your best chance is with these 2 specialists. Go equipped with a concise list of all your symptoms, whether they seem related or not, leave out the fibromyalgia, anxiety and depression history, and take all your lab results you’ve had. Unfortunately, you may be dismissed if you include those last 3 things. Good luck and keep trying. Someone will hear and help you