Hello doctor. I had sex with my bf on 18th Aug. He didn't cum inside me but since I was worried, I took an ipill within 72hrs. That month I got my period 1 day earlier. Now this time I had my period date on 1st October and it's 4th today but still no signs of it. Is it normal? (we did have sex again on 29th Sept ie 2 days before my date where he didn't cum inside me but probably he was inside me without the condom, we saw the condom outside when he was going inside me for the next time, so not sure if that came out while we were not having sex or while we were ) please help.