If she still having periods after unsafe sex, then there are virtually no chances of being pregnant. But just to be on the safe side, it would be wise to take a home pregnancy test. Please use condom next time. https://lovematters.in/hi/pregnancy/unsure-about-being-pregnant/unsafe-sex-missed-period-am-i-pregnant https://lovematters.in/hi/pregnancy/home-pregnancy-tests-dos-and-donts If you would like to join in on a further discussion on this topic, join our discussion board, ‘Just Ask’ https://lovematters.in/en/forum