Thanks ladies. I caved yesterday and while DF cooked dinner, I decided to lay on the couch and have a nap. Was apparently out for about 40 min and I felt so much better. No problems getting to sleep last night either. And I feel much better today. Still really tired, but I'm not falling asleep at my desk.

Now I feel kinda silly worrying about having a nap when clearly my body has been screaming at me to have one. Pretty sure a nap before dinner is going to be a regular thing now