Yeah i know what you mean i've had headaches all my life. A feew months ago i was getting tension migranes nearly one every other day, so i went to my doc and got this preventative medication, its been five weeks and i've only had one headache, not even a migrane, its been brilliant.
Keep a Headache Diary for a couple of weeks maybe two months go the the doc and show them what its beee like and they should be able to help you
Good Luck
Moo