[Big Poppa Smurf]

This happened to me twice (apparently plastic bags are not good condoms, who knew), the first time it scared the [censored] out of me but nothing happened, the second time I just didn't care enough to get worked up about it. Some girls (especially 16-18 year old girls) just freak out about it, and if you've been using a condom correctly you really don't have to worry.

That said there's nothing you can do until you can take the test, so just try and relax a little bit and don't let it ruin your life until you find out she's pregnant.