It happened again.
My manager asked me if I was suffering from a headache.
Which I wasn't at that point.

But wouldn't you know it?
An hour or so later.
I could feel it pulsing behind my left eye. 

Which isn't surprising as the day was already starting out to be stressful at work.
But still.
Not welcomed.

Thankfully taking a couple of Excedrin helped to defeat the headache beast before it became a total pain. So yay.