Head hurts

I felt great this morning, rested, energized and ready to enjoy my day. About mid-afternoon the headache kicked in again. This evening my teeth hurt, so I've taken sinus meds on top of the pain killers. Hopefully there will be easy sleep and I'll be good in the morning. I'm afraid though that it will convert overnight.

Is it possible to stress yourself into a migraine, by hoping you won't have one? *bleah*