I am 19 years old. I have had a horrible pulsating headache for the past 2, almost 3 weeks now, its been non-stop from the time I wake up to the time I go to bed. At the same time Ive also started having hot flashes, dizziness and lightheadedness, occuring about 5 to 6 times a day. Its all been interferring with my daily routines. I have no idea whats going on.