Everyone would like a quick answer, and please remember that Scarleteen is a free service run by volunteers.
That said, you will find the answer to your question here:
What's The Risk? - Five Easy Pregnancy Risk Assessment Flow Charts
If you do not wish to become pregnant, and it has been less than 72 hours since the incident, you can find information about emergency contraception here:
Also, you have a significant STD/STI risk, so both you and your partner need to get (Testing, Testing…) full STD screens.
"Ooh, I'll settle down with some old story/About a boy who's just like me/Thought there was love in everything and everyone, you're so naive!"-Belle and Sebastian, "Get Me Away From Here I'm Dying"