"first, the pill does work. i took it while i was on my period, so my period was longer and the cramps came back. yes, it does mess up your cycle for more than 3 months not just 1 or two months, but you know..every girl is different. this pill saved me but it will be a great idea to start birth control because plan b screws up your body. it was scary at first because of the bleeding and missed periods so just relax. pill works great"