Questions...

So my boyfriend and I had unprotected sex last Saturday night around 11...it was stupid, I know. I started my period like the morning after (Sunday), and took Aftera on Monday morning around 9:00. I have read that chances are low for pregnancy during a period. I just hope I covered all my bases. It was a stupid mistake, we didn't have anything with us and shit just got out of control. Y'all know how it goes.