Ended up with a headache this morning.
Which may have been the same headache I Had last night...who knows.
It was in the same place, behind the right eye and probably from the tense muscles in my neck. 
I took an advil to try and relieve it.
Didn't work.
Took an Excedrin and on my breaks rested with a heat pack on my neck.
And sometime in the middle of working and doing things....the headache vanished.
So yay for it not sticking around for too long today.