I saw my last period on 12-15th DEC 2015, on the 16th I had unprotected sex, again on d 5 & 6th of Jan 2016 I had unprotected sex of which I took the two tablets of postinor 2 at once, the next day being 7th Jan 2016, I noticed light bleeding, two days later my normal period came, I also had unprotected sex on the 16th-20th of Jan 2016 and now its 6th Feb 2016...I have not yt seen my period. Could I be pregnant or could it be that the postinor 2 is affecting me?