J.S.
Considering you can get pregnant ANY time of the month because you can ovulate when you don't expect to, my magic 8 ball says, "If you had sex and a condom failure then you 'could' get pregnant."
You're going to have to wait until your expected period to find out to see if you're late, though. Don't worry about, and try not to look at every little possible symptom as a sign of pregnancy.