Waking up in the morning with a headache is frequently a symptom of sleep deprivation. If you're tired, fall asleep easily during the day, don't feel rested, I would investigate sleep disorders. There are a whole bunch of them, and they can be pretty serious if not treated.
I know this isn't the answer you were expecting, but I had to throw this out there. Sleep deprivation can wreak havoc on a person's life.
Laurie
