In the beginning of september i started taking bc pills. i waited the sunday after i started, exactly one week, & i had unprotected sex with my boyfriend. a week later, i started to bleed, and this bleeding lasted all through my active bc pills until the

Birth control pills: (BCP) do not provide reliable birth control until after you have finished one full pack. The bleeding you are having may or may not be related to the unprotected sex. It is more likely your body's hormonal response to the BCP. On the other hand, having unprotected sex puts you at high risk for sexually transmitted infections which could be causing the bleeding. You should be tested for STI.