Re: Can you get pregnant the day you are supposed to start your period?
I'm confused. Maybe if you told us which of the 21 pills it was that you missed (and when you took them) and when you had intercourse. (And by 'missed' I assume you mean you didn't miss them entirely, just took them late, as soon as you remembered, right?)
Because it sounds like you're saying it was the last days, and that you expected your period the very next day. (Women don't start their period the first day off their 21 days of active pills, it usually takes a few days.)