tieleg,
I'm sorry to hear of all you are going through. I can tell you that your diabetes was probably caused, at least partly, by years of undiagnosed sleep apnea. Undiagnosed sleep apnea causes metabolic syndrome which in turn causes sleep apnea. Heart problems, blood pressure problems, high cholesterol, are all symptoms of metabolic syndrome...there are other symptoms as well which you can look up if you're interested. That's how you got here.
I'm not surprised you're tired if you suffered with sleep apnea and all the conditions it causes...for years! Your body has been through a lot.
As for the tiredness you experience now, well there could be many reasons for that. It could be uncontrolled diabetes, you CPAP may not be at the proper pressure for you (pressures can change over time), perhaps your mask is loosing suction or not fitting properly. does your mask fit over your mouth and nose? That's best in case you breath through either while sleeping.
It could also be an issue of something else not yet diagnosed, such as adrenal fatigue aka adrenal insufficiency. I would urge you to look up the symptoms for yourself and see what you think.
It could also be a testosterone deficiency. This can be tested with a simple blood test and there are medications that can improve these levels easily and inexpensively. It can happen at any age and is not surprising to happen with sleep apnea.
It could also be a vitamin deficiency. A common deficiency are B vitamins. B12 is the "energy vitamin". It's not a good vitamin to take in pill form because it doesn't get absorbed, instead take an injecable form (available at your doctor, one injection lasts a while) or yourself in liquid form (spray under the tongue). I take the one from Dr Mercola, it's available on the web and it's worked great for me and everyone I know who's tried it.
It could also be food allergies that you have developed over time. We have so much processed, irridated, chemically sprayed, unnatural food that we are eating, our bodies are stressed and malnourished. Food allergies are easiest diagnosed by a blood test (they sent my blood to Mayo clinic). If you eat something and are very tired afterwood it's likely a food allergy. If you are craving a particular food, you are most likely allergic to it. Sounds crazy but it's true. You can be allergic to anything but the common ones are gluten, dairy and eggs. If you get off foods you're allergic to you'll notice a great improvement in energy levels within a few days to a week.
A sluggish thyroid or improperly controlled thyroid is a very common cause of fatigue. I hope you are on a natural product like Armour instead of a synthetic drug like synthroid. The synthetics usually make people tired because it doesn't have T3 in it. The body must convert the drug to a useable form which is tiring and sometimes the body can no longer do it effieiently. Look up "Mary Shomonn" on the web and read her info on thyroid. She's the best thyroid source out there, she's a patient and a patient advocate. She's written many excellent books. I would strongly urge you to look up Mary's "Top Thyroid Docs" list and find a naturally oriented doc in your area. These docs are miracle workers and can change your life, they did mine! They will actually LISTEN to you, give you time and look for the CAUSE not just symptomatic treatment. Please consider these doctors, they don't cost more than regular doctors and your insurance should cover it.
There are so many possible causes, it's really hard to say. I truly believe a more naturally focused doctor would benefit you in this situation because they look for the cause instead of just treating symptoms. Someone like a naturopath. Again, one place to find them is the top thyroid docs list maintained by Mary Shomon.
Best of luck to you and I hope you feel better soon.
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