Took plan b after unprotected sex on the third day which was a Wednesday but then had sex that same night and the night after that and got my period 4days after that(Monday). He finished in me and I didn't take plan b after he ejaculated in me. Could I be pregnant and the bleeding just be part of plan b's method or maybe I'm not pregnant just because of the fact that I got my period. Last day of.first period was about 2weeks ago.