Could there be a chance of pregnancy?

Katelynn
Me and my boyfriend had sex Saturday, we used a condom and he ejaculated, he said in the condom but to be sure I took plan b an hour if even after we did it. Tomorrow I go for acl surgery and they want to do a pregnancy test, is it possible I'm pregnant? And if I were could they tell this early cause it's been five days since we had sex?