Hello Pathwaytofree,
I am also unutterably exhausted all the time.
I have iron-deficient anemia.
I am hypothyroid (low thyroid levels).
I have low vitamin D levels.
I am an insulin-dependent diabetic.
And now...I have been diagnosed with Obstructive Sleep Apnea.
All of these things conspire to make me dead dog, lead-in-my legs, can't begin to explain it....tired.
I encourage you to see your GP at your earliest convenience. It can't hurt, and it might help!