It does sound like you have more going on. I have FMS and CFS, plus TMJ, four spinal issues and osteoarthritis. Pain is my primary complaint, but probably because I have so many issues that cause pain.
The fatigue is debilitating though - I don't even have to exercise hard to cause the malaise mentioned previously. Yesterday my husband and I did a day of cooking to stock the freezer with lunch and dinner entrees, by the end of the day I could barely walk because of my feet and back, and today (after sleeping poorly) I woke up crying from pain and could barely move. That's all despite the fact that I paced myself, taking frequent breaks in the recliner, and used a barstool as much as possible if I was going to be in one place for more than a couple minutes.
Even with all of those issues that I have, my PMD still thinks that I have something not yet labeled, because I have bouts of symmetrical pain in my hands and feet. I need to go to a specialist to see if I have another form of arthritis. I've tested negative twice for RA, but that doesn't necessarily rule it out.
TMJD - Fibromyalgia -Mayofascial Pain Syndrome - Osteoarthritis (shoulder, spine, knee) - Central Canal Stenosis - bulged discs in the cervical and lumbar spine