Have you ever had any blows to the head? I only started getting migraines (average No. 4 grade, up to and including nausea) after I got kicked in the head. And I always know when to get my eyes tested because I get migraines daily, increasing in severity until the glasses get checked.Lavender oil on the back of the neck, peppermint oil in a burner, all work for me.
Oh, and if you've been in a car accident, get checked out for whiplash too!
LTS