A menstrual cycle varies from 22 – 36 days. On average, a woman gets her period between 12 days and 14 days after she s ovulated. Women conceive during ovulation and ovulation occurs on day 14 of a 28 days cycle. During the period of bleeding or immediately after period, there is no chance of getting pregnant. Women conceive during fertile period i.e. day 12 to day 18 of the cycle. Sex during bleeding or immediately after cessation of bleeding does not cause pregnancy. Pregnancy is possible with pre – cum fluid which is secreted from penis before actual ejaculation. Pre – cum fluid also contain sperm. So there is a chance of getting her pregnant. What you can do at this stage? Use emergency contraceptive pill – levonorgestrel 1.5 mg per oral within 72 hours of unprotected intercourse. Efficacy declines as time elapses between sex and drug intake. But it is reasonably effective for up to 120 hours and perhaps longer. However, you should remember that it is more effective the sooner it is taken after unprotected sex. How to confirm whether she has conceived or not? Get done a pregnancy test with disposable strip. It is easy to do. Or you can go for blood hCG level. I hope this information will help you. I will be happy if you ask another question Thanks