I got on
sprintec birth control in september and was taking them for 3months. My
period came september 25th, october 23rd and november 20th. Before i took birth control i had iregular periods and once i got on the pills they were 28days, besides november because im still waiting for it to come in 2weeks if it happens. But im not on birth control for november and so on. My periods are 5-6 days long. So for november i got off on the 24th and had sex 24, 26, 27, 28, 30, 1, 2.