I got a terrible headache for the past 3 weeks - im currently pregnant and i cant take any medication ... ?

Treatment is: Treatment is available, pregnant or not. Most people have a headache at some time, such as from colds and flus, lack of sleep, too much driving, long hours on the computer, stress at work, etc... A "terrible" or an increasing headache, recurrent headache, or one with other worrisome symptoms should be evaluated. One's Ob-Gyn and Primary Care doctors can help.