Could i be pregnant ???

I had unprotected sex with my bf 2 days after my period (oct 5th) he pulled out but i still took plan b, 5 days later i stared what looked like my period again. I don’t know if that is normal or not but according to glow i was supposed to get my period November 14 but i haven’t gotten it yet. I took a pregnancy test and it came out negative, is there a chance i could be pregnant???