Is my girlfriend pregnant???

I have no idea. She can take a home pregnancy test. I think she needs to be a good 2 weeks after her period is supposed to happen (you'll need to check directions on the package). They're pretty accurate so I'd say, don't panic until/unless she takes the test.

You are most likely fine but you can be surest with a test. Precum does have sperm in it so be aware that this is not a slam-dunk, 100% guarantee that she is not pregnant. It is unlikely but it is not completely impossible.

And, now that you know how to use a condom, use it correctly next time, okay?

The question you should be asking is COULD my girlfriend be pregnant. We here at A2K have absolutely no idea IF she is pregnant, thus asking us if she is pregnant is rather silly.

As for could she be pregnant, the previous response does a fine job of answering that.