I had unprotected sex with ejaculation inside the vagina on the first day of my periods. However, I took a pill of Unwanted 72 within a few hours to stay on the safe side. But on the very next morning, there is hardly any bleeding. It is my second day and I should be bleeding profusely but it seems to have stopped completely. I have a history of irregular periods which had resolved recently. Will the taking of the pill during periods lead to any further complication? Why has the bleeding stopped? I am presently 23 years old and my menstruation had started when I was only 9.