The first thing you need to do is figure out what kind of headache
this is and what might be causing it.
I would suggest starting a headache log. Start keeping track of the times you get the headache, where it is, how severe, what you were doing before, etc and what you do to help it. This info will help you and your doc figure this out. http://www.headaches.org/for_professionals/headache_diary.