am I pregnant?

So I had unprotected sex Aug 27, 2 days after my period ended... and I'm taking birth control but I forgot to take one day that week and didn't take it the other day. So, to not be scared of getting pregnant I just didn't do the pause for 4 days on the pill, and I'm about to get my period now. ps: he didn't cum in me, he pulled out before he came. could I be pregnant?