I haven't had one in 6 years... I get the Depo Pravara shots once every 3 months (about 50 bucks a shot, not covered by any insurance). This way I don't forget a pill.. and I am VERY forgetful. It was kind of annoying the first couple of months, when my monthlies just.. stopped. I went through like 20 pregnancy tests.. then found out it's a possible side effect and I don't worry about it anymore.