I used to get horrible migraines where I would go to the point of vomiting. I had them for three years, and I had a CT scan, etc... and everything was normal. It turned out for me that I needed glasses, and my migraines were from squinting. I still get migranes once and a while, and I finally figured out after months that I get them when I have to go the bathroom, and don't.
I heard some of the new drugs like Imitrex work or those inhalers, the woman I used to babysit for used that and also ate blue corn chips ,
and that made them go away. Also, look at what you are eating, many people are allergic to MSG (commonly found in Chinese food) and get headaches from that. Also, if you take a OTC pain reliever on a regular basis (say for a week while you are on your period for cramps), and then stop when it is over, you can get like rebound headaches. I've gotten those, and they best thing to do is just relax and see if the pain goes away, but not if they are migraines.
Good luck to you, and I hope you start to feel better!
L.