Hello doctor I had unprotected sex with my gf on 18th. Her last month menstruation was on 21st. She took ipill 19th within 24 hours and she still did not get her periods. Is it because of ipill or is it a sign of pregnancy? Usually her periods are 2-3 days preponed to the last mensuration date. She still did not get her periods it's already 5-6 days past now? Please doctor answer us asap. We are really scared.