I think I figured out my migraines. Ever since I've been on the CPAP I haven't had a migraine. Because I've actually been sleeping! Last night I stayed up way too late watching the Browns preseason game and got up really early for work. I should have known, because I felt it right after I woke up. I immediately took three aspirin and hoped for the best.
A few hours later, while at work, I made the connection. Before the CPAP I wasn't sleeping well at all. On my worst mornings, the migraines actually woke me up. Usually, I'd become aware of the pain soon after I got up. After seeing my sleep study results which told me that basically I haven't slept an entire night in over a year, I saw where the lack of sleep could cause all kinds of problems.
Since I've been sleeping, I've been migraine-free. At least until today.
When I got home from work I took a relpax and started feeling a little better (relpax makes me nauseous). I'm feeling a little groggy and queasy but at least my headache is dissipating.
Now I know that even with the CPAP, I need more than five hours sleep or I'm risking a day of misery.