[Brandon]

When you ejaculate, you know. Unless you ejaculate way too quickly, then ejaculation is out of the question. Was it pre-cum, or was it vaginal lubricant? I'm willing to bet that it was vaginal lubricant. But no one knows for sure. Go to the nearest grocery store and buy you some condoms, and a pregnancy test. Have her take the test according to the instructions on the book, and then you'll get your answer on whether you should be worried. In the mean time, use a condom. Don't be stupid.