I am in the same boat, never a napper, but now all I want to do is sleep. Which is quite difficult to do at work. One day I was sitting in my chair at work and all I wanted to do was crawl in bed. Not necessarily to sleep, but just to lie down and not move.
I also have become anemic which they say is unrelated, or just a coincidence, perhaps I was on the cusp. I wish everyone well and don’t give up.