pregnant????

Happy New Years right??? Last night me and my boyfriend had unprotected sex and he came on my vagina but then went back in after a little while and we didn't "clean up" but I am supposedly 4 days from my period so I'm done ovulating right?? Is there a very high chance I could be pregnant?? (Sorry if tmi and we normally are very smart about how we go about things!! Just apparently not last night 😬)