Three years ago, I had an accident with a piece of wood falling down on my head. Ever since I have had headaches on and off. To relieve it, I have to put my hand on the front of my head and make a horizontal twisting motion until I hear something snap on top of my skull. Where does the snapping sound come from, I'm guessing fractured skull. What can I do to get rid of this headache, rather than just take an Advil. Another question is how can this affect me when I get older. Thanks