do you have a history of headaches? do migraines or depression run in your family? are you under increased amont of stress? what is your diet like? does it consist of lots of sugar that would make you crash and caffine that would give you a headache if you don't supply your body with enough of it? do you get enough exercise? do you drink enough water? ask yourself these questions and see what answers you come up with. it could be many things. you have to analyze your personal situation.
why do i feel tired exhausted and suffering from a headache all the time?