Thank you! Just knowin that takes a lot of the stress off!
Pulling out is not a form of birth control, so you still have a chance of getting pregnant, as pre-ejaculation does contain sperm. Though the chance isn't all that high, so try not to stress yourself out. All you can do is wait for your period to come and if it is late, then take a home pregnancy test. Then take this as a learning lesson and use protection next time you have sex.