prego or not

okay so the last time I had my period was like last month and let say maybe 2 days before it was gonna end my bf and had morning sex and he came inside me so I totally forgot to get a plan b BC it was so early we had just woke up and when we both got our nut we went back to sleep anyway so I had stop bleeding keep in my mind I was 2 days away from my period ending so my flow stop for a few days and I started bleeding like crazy I bleed for a whole another week..... like is this normal I don't know what what's going on maybe someone has experience this