Help please

So yesterday my boyfriend and I had sex for the first time. We did it twice, the first time we started off without a condom then he put on and we kept going. Then a couple hours later we did it without one. This was his first time ever and the the first round I felt down there and it was really really wet. I'm not sure if he came inside of me and didn't tell me or I was extremely aroused. But usually he takes forever to cum. I am not on birth control but I was for a couple of months ago. Could I be pregnant? Should I take plan b just to be safe?