It sounds to me like you have a migrain
I started getting them in my 20's, and sometimes I'll actually have one that lasts for a few days. If I don't take something as soon as I realize I'm getting one (usually I wil see spots or have "blank" spots in my line of vision before the pain starts), the pounding becomes so bad, I'm actually afraid I will have a stroke or something. I also think you should go to the Dr.---he can prescribe something to take for migraines. I usually just take aleve as soon as I develope symptoms. I hope your night isn't too awfully bad, and that you feel better in the a.m.