Hello, Me and my girlfriend had sex last March 21 and march 24. We used condom but We think the condom broke so we used nordette as an ECP. She drank 4 tablets of nordette at exactly 8pm of march 24 then 12 hours after, she took the 4 tablets remaining. She had her withdrawal bleeding last March 29, but I m not sure if its withdrawal bleeding or not. So here s my question: 1. Is there any way that she might get pregnant? 2. Does her menstrual cycle is altered or became irregular in some case? 3. Does the ECP successfully do its job? Thanks!