The headache came on around 1:30 or so today. Right before I got off work.
It's settled behind the right eye currently but it started by the shoulder blade and worked its way up. *exhales*
It's probably from residual stress from yesterday's stressful day. Or I could have been more sensitive to slightly stressful scenarios today.
Who knows.
But it is one of those headaches that's refusing to go away. 
Sleep hasn't helped, meds have only taken the edge off, heat packs are only slightly helped.....so I'm going to try a shower and then maybe go back to bed.