I'm scared!

I had sex the 5th of July and he came in me with out asking and I took a plan b pill. Then the 9th we had sex again and he came in me again with out asking. Now I'm scared I could be pregnant. I was on birth control but forgot to start the new pack, and still haven't started it. I don't know what to do. I'm scared. I mean I want children but now I don't think I'm ready. Some one please give me advice.