hi,my last period was on 21st august and the previous was on 26th july.On august i had postinor 2.but now i dont have my period yet.i had unprotected sex on 12 sept. by pulling method.this month i dont have my period yet.i have abdominal cramp but instead of bleeding there is some white discharge.is this cause because of pill or can i get pregnant.i have some signs too like fatigue, milky white discharge from nipple.can this is for pregnancy?now what should i do/i m really afraid plz help....