Listen dear, emergency pills are supposed to be used in EMERGENCY only, and these pills are not supposed to be used in place of contraceptives because these affect the menstrual cycle of a woman. PLEASE do not use these carelessly. So it's not surprising for periods to be irregular. Consult a specialist or a registered doctor. Please use a condom from today onwards. Read this write-up: https://lovematters.in/en/birth-control/chosing-the-right-birth-control/morning-after-pills-instead-of-condoms-is-that-ok 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