Hi -
OK, I'm not a doc. But I did have fatigue all winter & into spring. Usually I'm a night owl, but I was unable to stay really awake past 9 or so. Only had get up & go to run every few days. That sort of thing. This was unusual for me, I'm usually pretty sparky & not prone to being down in the dumps or low energy.
Finally went to the doc, who ordered a series of blood tests.
Very Low Iron, and, oddly, low SALT.
This would explain my craving for steak, french fries, & cheeseburgers.
Can't justify the ice-cream, though.
I started taking iron, drinking extra electrolyte replacement
(just the kind in little packets - like EmergenC but w/more sodium & potassium - the brand has slipped my mind...came from WholeFoods & other similar stores - not the expensive recovery drinks
), even after shorter efforts that I usually would have not worried about it. I read up on iron rich foods and foods that block iron absorption & switched things around a bit.
In a couple of weeks I felt MUCH BETTER. So now I make sure I don't skimp on salt, replace electrolytes after most workouts, and take iron. I keep Quaker Instant Grits on hand, too. They have a huge amount of iron in them - sometimes they are a late night snack if I had a late workout.
It was a pretty simple solution to something I put up with for months thinking I should be able to sleep/eat/think my way out of... Darnit.
So,maybe your doc can do a couple of quick blood tests?
Good luck.