Hi hibabasit, Thanks for writing in to Healthcare Magic! Postinor2 is a very effective medicine and you have taken it well in time so it is highly unlikely that you could be pregnant but you should have avoided the unprotected intercourse itself. The emergency contraception drugs cause negative impact on your health and cause hormonal imbalance. I think you will have periods with some delay. If even then in doubt, you can do urine pregnancy test by the kit by yourself and be secure. If you have any further query please let me know I would try to answer it for you. Wish you a great health!