Hi Dan, welcome to healing well. I am Beth, a moderator from the fibromyalgia board. Just saw your post and thought I'd pipe in my 2cents.
Headaches would not cause or lead to a fibromyalgia diagnosis; it's more of a "ruled-out-everything-else" syndrome. It consists of many aspects, including muscles aches/pains, anxiety, irritible bowel syndrome, and many many others.
Why don't ya stop over at the fibro board and read up on some of the posts. It may help you to better understand your symptoms and help you to ask better questions at your next dr. visit. There is no cure, no perfect medication, for fibromyalgia. We only treat our symtpoms, as many and diverse as they are. So read up and post to the kind friendly folks over there and see what you can gather.
Nice meeting you and welcome again,
"The heavens proclaim his righteousness, and all the peoples see his glory." Psalm 97:6