starting having intense headache and blocked sensation in ears last year. Was put on migraine meds. Now I notice that if I eat something every 2-3 hours, no headache! This is easy during the day, but not during sleep. I wake with headache and blocked ears. I now keep a bowl of walnuts near my bed and eat a handful every 2-3 hours, again, no headache and no ear discomfort. WHAT IS MY PROBLEM?