Touch of Flu?

So I woke up completely exhausted still.  I started thinking that perhaps the allergy pill was not the source of my exhaustion. Today, 24 hours after having taken the allergy pill, I am still exhausted.  I went back to bed after having prayer and Jack heading to the bus stop.  I was way tired and passed out until 10.  I went and worked after that and have been home since.  Just exhausted though.  Ready for bed. Must go to sleep now.