Hello dear user! I have gone through your query and understood your concerns! Thank you for sharing them on healthcaremagic. First i wanted to say that the days you have had sexual contacts with your boyfriend have been most probably infertile. Remember that the egg ovulates in the middle of the cycle, so in the 14th day if you have a 28 days cycle. Three days prior and three days later is the fertile time in your cycle when you might conceive. Anyway you have taken a pack of postinor to prevent the pregnancy. The second pack was completely unnecessary. You have no chances for a pregnancy after that in my opinion so relax and don t keep yourself under stress. Side effects of postinor happen and may vary from a woman to another. In most of the times there is a cylcle disorder, so an earlier menstruation or spotting may happen, delayed menstruation too. Don t be worried if your periods delay next month. To calm yourself down you may have a pregnancy test at home after two weeks form the sexual contacts but i m sure it will be negative. I hope this answer was helpful to you! Please kindly rate it as helpful and write a short review about your experience with me! I would appreciate that a lot. Thank you and best regards! DR ERIOL