Ashish bete, these pills are supposed to be used in EMERGENCY only, not for everyday use when you don't use protection. 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. Since you have made her take so many pills, it's not surprising for periods to be irregular. Consult a specialist or a registered doctor soon. Please use a condom from today onwards, for her and for you. 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