The Pill and Unprotected Sex

My boyfriend and I have been dating for about a year now and it has been a week since I started the pill. We had unprotected sex yesterday, and he didn't pull out but I pushed it out as fast as I could as soon as he got off me. I took the pill at the same time I usually do yesterday and today, is it a for sure thing of me getting pregnant? I mean I would really like to hear someone's respond so I don't stress out too bad about it.