Ended up with a headache at work this morning. 
Not sure if it was leftover from last nights headache,
or if it was a new one that started up because I was probably stressing about working with a particular coworker that tends to....like to complain....
Thankfully taking some Excedrin helped to get rid of the headache before it got too bad so I could focus at work...thought I've been left rather tired most of the day.