Usually I get pretty medium flow, light cramps for the 2nd day usually, four day lasting periods. Recently I started taking birth control for the first time and my first period has lasted now 6 days which has never happened, my flow is not heavy but above average compared how it usually is and cramping, cravings and back pain is through the roof! The only positive has been my extremely horrible mood swings have gone down drastically. Does anyone know if this is supposed to happen and if it only happens for the first period? I just want to know what is going on with my body!! Thank you haha.