Had sex back in October, the condom broke to to be safe I took the plan B pill the very next morning. A couple days later I got my period, on October 17, which was early. I got my period again October 30th, which was on time. Since then I have had protected sex twice, once the condom broke but we were just getting started, he had not ejaculated yet, so we replaced it and all seemed fine. I should have got my period a week ago. Is it late just because of the plan B pill? Or should I be worried