Hi. I don't know what tests you may have had before and we can discuss this after this but here are the possibilities I would check you for. Thyroid problems, low cortisol levels, autoimmune disorders like polymyalgia rheumatica and other autoimmune disorders, fibromyalgia, chronic fatigue syndrome, and I would get an MRI of your entire spine to look for disk problems. Sleep apnea would not be high on my list. Please let me know if you need any more information.