Hello, I have studied your case with diligence. As per query you have fibromyalgia and pain in TMJ and headache . Well in condition like fibromyalgia , it amplifies painful sensations by affecting the way your brain processes pain signals . But this pain start with physical trauma, surgery, infection or significant psychological stress. So it seems to me that TMJ pain is due to bruxism that is clenching of teeth at night . I would suggest you to consult the dentist and get mouth guarg so that TMJ problem can be minimize . Doctor may also prescribe muscle relaxant . Also do physical therapy of facial muscles . In the mean while consult doctor and take treatment for fibrommyalgia like antidepressants , anti-seizure drugs and pain killers . Wishing you good health. Take care