My primary family doctor suspected it but wanted to rule out other things so he had me see an endocrinologist. The endo couldn't find anything hormonal wrong but after an examination he diagnosed me with fibro. I wasn't sure how common it was for an endocrinologist diagnosis so I followed up with my family Dr and he agreed with him. The endo did the pressure point test so after some of my own research I was confident with his diagnosis.
My family doctor suspected it, I then asked him to give me a pass to see a rheumatologist. The rheumatologist is the one who diagnosed me in the end, since my family doctor was no specialist, but he suspected I could have fibro. However, it was the rheumatologist who confirmed it
My primary doc sent me to an internist who suspected fibro. The diagnosis was confirmed by a rheumatologist. This was after about four years of wandering pain, migraine, fatigue, cognitive issues, all increasing in intensity as time marched on. Looking back, I had many symptoms for much longer, but considered it part of aging. Silly me.