I just discovered this web site. I have been getting migraines about 1-2 times a month for practically my whole life (female, 42). Over the past few years, I have noticed an pre aura aura, if there is such a thing, which is a ringing or blocked sound, as if someone is convering my ears, letting go, and then covering again. Almost as if I am hearing the blood flow in my head. I find if I stop what I am doing, push real hard on my ears to stop the noise, I can sometimes stop the progression of the migraine. Has anyone else ever experienced this?