HELP ASAP!!!!

This last weekend me and my boyfriend went camping. We left Friday and when we got there we took the four wheeler out and fucked on it BUT the condom ripped right when he nutted and a little got inside and he pulled out really fast. It got all over me and he took his shirt off and wiped it up. Am I pregnant? Help! Oh and we couldn’t go get plan b because the closest store was 2 hrs away and his parents were with us.