Is it possible that I am pregnant?

Me and my boyfriend tried . First we had and he d. He wiped it up, but after that we decided to try . He didn't go but half way in, a couple times. I still consider myself a virgin. But we started worrying that could have made me pregnant. Is that possible the sperm could have lived on his ? I'm due for my period and I've been extremely thirsty and feeling emotionally crazy. I'm probably Orr thinking it. But is it possible I'm pregnant?