I had sex with my partner in april,2013 n i took i-pill (emergency contraceptive pill)after 2 hour of having sex and i had period also after that but from may till now july,2013 i don't hav period.I did two pregnancy test at home and it shows negative.Am not married yet,n i feared that what will do now...,what could be the reason.Please tell me is there any chance of getting pregnant.......