given the length of time you've been consistently taking birth control i'd say this is highly unlikely. it sounds like what you're experiencing is breakthrough bleeding and if you're having your pills changed (ie. seeing your doctor soon) it's probably a good thing to mention (as well as your fears re: pregnancy) to your health care provider.
can i be pregnant on my second week of birth control pills? . i had sex two days ago with out a condom. i have been on birth control for about two years. i never miss it or anything. last night i startd to bleed and today it i really heavy. i. am only on my second week of pills it started wendesday. im getting my pills changed next month because i have been known to have irrigualr periods but im still concerned if there is a chance i could be peregnant.