I am a big fan of taking care of yourself. Even if you are not sick, you can still stay home from work. I get a Bizillion sick days, and personal, vacation days on top of that. I am one of the lucky people who only get sick a few days out the year, and unfortunately they are usually on the weekend.
So, what happens to my sicks days, they sit in my pay check and play poker with each other.
Take a day off! I tell my staff that all the time. Take it off, plan it to take it off, or wake up and say, "The heck I am staying home today, going to the beach, or going for a hike."
Taking Monday or Friday off is a double bonus, THREE DAY WEEKEND.
Look, as long as your are doing your job, don't worry about it.
Take care of yourself. Life is too short. It is too short. You will never get to all those place "you are supposed to go before you die." Has anyboyd done that. So circle a few and go.
Better yet, keep a list. I am big on lists. A list entitled, "things I will do when I have more time." And then take time off and do them. Have fun cutting your toe nails!