Off Day/Day Off

Am I the only person who just wakes up feeling weird? I opened my eyes this morning and everything just felt off. I have no idea why. Maybe it's just an accumulation of exhaustion from working my butt off this week. Hopefully that's it. It's yucky timing though because Gerrit actually has today off. I want to be able to enjoy today but instead, I just feel weird, and tired, and kind of just want to crawl back in bed for the day.
Grrr... I hate off days.