Missed period while on birth control

Hello,

When you are on birth control pills and you take them correctly (and you say you didn't miss a single one), then the pills prevent you from ovulating and that's how they protect you from getting pregnant. The period you have when you are on birth control pills is not the same thing as your period without the pill. Depending on the type of BC pills you are taking, you get your period when you are on placebo or sugar pills. That period is in fact a breakthrough bleeding caused by the lack of hormones that the pill provides during the rest of the month. And for some women that have been on the pill for years it actually can take a few months before they start ovulating and become fertile again. So, this is not uncommon thing to happen when you are on BC pills, in fact - the longer you are on the pill the bigger the chance that you'll start skipping periods.