Hello, I had intimated with my partner from 17th feb without precaution. And she has a date of his period is on 28th feb but she take a unwanted 72 within 72 hours. We are not sure that sperm is not goes inside. But today is 2nd march and still she do not have his periods. So is there any chances of pregnancy or it is something else. And when we expect the periods. And if we test with pregnancy kit and if it is shown negative so what should we do. Please help me out for this. Thank you.