For a change of pace, the headache has moved to take up residence behind my left eye today.
The muscles in my neck there are stiff.
And I'm guessing it's partially from sleeping, as I took a nap after work and the headache only came after that.
But the tension of work, and the tension of stressors from the night before probably are a factor. 
*exhales*

However the main cause may be from my contacts giving me problems.
As my right eye isn't seeing as well as it should be even with the contact in.
Which could either be from stress....
Or my right eye has decided it actually wants the stronger prescription.

As like a year ago I increased my prescription in my right eye, only to decrease it like four months ago because I was getting too many headaches and was feeling strain...but now the right eye doesn't seem to be liking the weaker prescription...so we're going to try increasing the prescription again in the right eye.
*fingers crossed* that the shift in prescription will help decrease the headaches and help the right eye take on more of the work load.