amingtowin, the kind of doc you need depends on several things. First of all, do you have a good relationship with your family practicioner? Is (s)he open to discussions and constantly widening her knowledge? If so, ask for a fibromyalgia evaluation from her.
If not, you can go to a rheumatologist, a neurologist, a pain specialist, or a psychiatrist. It all depends on your own needs. Depending on your insurance, you may need a referral from your primary. If you are fairly sure it's a joint/mobility problem, go to a rheumatologist. If you are primarilly concerned about depression, try the psychiatrist.
My fibromyalgia was diagnosed by a rheumy, but I got my first glimmer of hope from a truly great neurologist. He tested me for EVERYTHING. He prescribed a whole spectrum of meds that got me out of an ever-increasing spiral of pain. Without his help, I would be in a hopeless quagmire of dispair.
Most of the time, NOW my family practicioner manages my care, but I depend on my pain doctor for nerve blocks every 3 months. I also know that either one of them will prescribe any meds I need--no questions asked. This is the product of years of responsible cooperation. When I didn't need high level meds, I asked to be weaned off them. I am now not using any pain meds, but will not wait one day to request them if my pain escallates.
Hope this is of some help. FM is confusing for all of us.
BetteK