 [ Symptoms ] 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 [ Disease ] given the length of time you have been consistently taking birth control i would say this is highly unlikely it sounds like what you are experiencing is breakthrough bleeding and if you are having your pills changed ie seeing your doctor soon it is probably a good thing to mention as well as your fears re pregnancy to your health care provider