Hii I had unprotected sex before 2 days of my due date of periods and he came inside me but I had ipill before 12 hrs. I was supposed to have periods on 4 Oct but it is delayed till now, I am having as such no symptoms of pregnancy.. Just suffered legs pain and little dizziness after ipill intake for one and half day. And there is no other illness or blood spot. Whats the reason? Is there any chance of pregnancy?