How do you get rid of a migraine with no medication?

Meditation Technique. Daily meditation can help calm excitatory neuronal circuits-see www.Equisync.Com you can also learn a technique to directly relax muscles surrounding the head that become tense during a migraine. See a book entitled "practicing the power of now.
Sleep. It will likely improve and resolve by being in a dark quiet place. Usually rest and sleep help. Accupuncture and chiropractic adjustment may help prevent the headache. In the acute setting I am not aware of the value of either.