Please help

So I had sex on August 30th around 3:00 pm and we used a condom. He came while still inside of me because he didn't pull out fast enough. I took plan b the next day at like 12 pm for fear that some came out of the top of the condom. I then a week later started bleeding light at first and then heavier. I was supposed to start my period on Thursday according to glow. I still haven't started my period yet. Could that have been my period? I got off my period on the 29th I believe. Do you think I'm pregnant? I really hope not.