I have been on depo provera for about a year now. I am 18 years old. My periods stopped completely after the first shot. All was hunky dory until I started to have chronic headaches and migraines at least once a week. I have been to the doctor and he has perscribed two different headache meds and one injection that I give myself when I get a migraine. None of them have worked. I am wondering if these headaches are caused by the depo provera shot. I am also wondering if headaches are common side effects of other forms of birth control. Also, if I switch from depo to some other form of bc do I have to wait a certain amount of time between the shot and taking the new form?