Is there a high chance that i might be pregnant?????

HELP!!!!!! Is there a high chance that i might be pregnant????? HELP!!!!!!!? Ok, so me and my boyfriend were fooling around and we got to the point where we had no clothes on, and we kept going and he went inside me a couple times(without a condom, i know that was stupid i really really do), but never very far, like just the head of his penis, and he didn't even break my hyman, and he was only in there for like a second each time cuz i would move to get him out. he did not *** inside me either, but what i'm worried about is the precum. because his penis did touch my vagina and go inside and he was "wet" and i know that you can get pregnant from precum. and i know for a fact that he masturbated earlier that day (b/c i asked him) so i know that there could've been sperm left, but im also sure he had to of peed before he came over to my house so that would empty him out right? but im not completely sure. I just want to know if there is a really big chance that im pregnant, like what is the chances? Because i do not want to be. And im not supposed to start for another week or two and i just don't want to be freaking out for the next two weeks until i know, so plz help me?????? PLEASE!!!