Headache
Despite conventional thinking by many people, headaches are by no means “normal” but instead are your body’s way of saying something is wrong. For instance I have not suffered a headache for over twenty years. Consider what the dream says about the headache. Or even as suggested in Being the Person or thing try being the headache and explore what you receive.
It often points to diet, or tension, so ask yourself what you are doing, or what attitude are you working under to cause tension. Maybe try using Arm Circling Meditation or Life’s Little Secrets
It might also be worth reading Martial Art of the Mind