I've been on birth control for a total of seven months, (after this week is over I will be beginning my eighth month on the pill) for the first four months of use I was on Lomedia, but due to heavy and frequent continuous spotting I was switched to Sprintec 28. I have been on Sprintec for 3 months and had unprotected sex twice. I was supposed to get my period yesterday, it has not been late once since beginning the new birth control. I'm sure as many girls do, I'm starting to get really nervous.