Justin you without a doubt deserve a "down day" to do whatever you want to do. And if lounging in bed is what you spend most of your day doing because that's what you wanted/NEEDED to do. It would not be selfish at all. It fact it would be GREAT!!!
Maybe it's your mind telling you something. Burnout would not be good for you considering all the things you have going on.
I hope you are able to find a "down day" really soon... heck even a few hours for "justin time" would be wonderful!
You deserve it!!!!
One of my favorite quotes is this one by john Lennon.
"Time you enjoy wasting, was not wasted."
- John Lennon