I haven't had migraines for years, since I stopped oral contraceptives. But my mother had terrible migraines regular as clockwork every month. She'd be sick in bed in a dark room for three days (this was before any of the new drugs aimed at migraine.) In desparation, she went to a chiropractor and had almost complete relief from them. He told her she had one leg slightly shorter than the other, prescribed a shoe insert and did weekly adjustments at first. Later I think she cut back to every other week. It was the only thing that ever relieved her headaches.