hi, i recently got of the pill due to your question.the pill is suppose to regular ur periods and make them less heavy and less painfull also not to get pregnant..but this isnt the case for everyone.the pill made my periods worse,i always thought i was pregnant b’cos my periods came late all the time.they also lasted 3-4 WEEKS!!! my pains were worse and my back was always sore. you CAN get pregnant on the pill especially if you missed a few and had sex during these times.a really good idea wud to do a pregnansy test or you wont know…good luck wif effrifin and i hope you get the answer you want…email me if you ever wanna chat or have any questions ok…daniella