Woke up with the same headache behind my right eye that I went to bed with. XP Foo. 
I took Advil and then later Excedrin and then more Advil as the day progressed but the ache behind my right eye refused to fade. Even a Dr. Pepper didn't help it. 

I ended up grabbing a shake and hamburger from arctic circle and afterwards took a nap...which seems to have helped make it go away. So either I needed more food or I needed more sleep. But I'm glad it's faded.