"i started sprintec after my doctor discovered i wasn&#039;t ovulating due to irregular periods. i started sprintec in october and after missing one pill in february i was pregnant. i know most women go on the pill to prevent pregnancy but for those that need it to regulate their cycles this one is great. i have the same irregular period now and will probably start sprintec again. it&#039;s cheap and the hormones didn&#039;t really affect me or my mood. thanks!"