Joy bete periods are irregular when they start, but if it is irregular every month, please consult a specialist or a registered doctor soon. And if there has been any unsafe sex before, it would be wise for her to take a home pregnancy test. Do this, soon. Also consult a specialist or registered doctor at the earliest. Read here also: https://lovematters.in/hi/resource/menstrual-cycle https://lovematters.in/hi/our-bodies/my-periods-are-irregular-what-should-i-do 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