So I'll cut right to it, four days ago my girlfriend and I we're "messing" around after school in my car, before I knew exactly what she was doing or could tell her to stop she had inserted my penis in her initiated intercourse. I told her to get off, and she did after eight seconds or so. My worry is I wasn't wearing a condom at the time, and while she isn't positive for any STD's, I NEED TO KNOW HOW VIABLE WHAT SHE DID COULD HAVE LED INTO HER GETTING PREGNANT. I've been doing research allot recently to sort answer my question. Absolutely nothing helped. Almost ever turn took me to one of these message boards with seemingly uneducated over zealous individuals pretending they are the "end all be all" authority on pregnancy.

If someone is willing to step forward and assure me that what happened could not, or extremely slim chance of leading to my girlfriend getting pregnant I'd like to know. I have absolutely no where else to go. Please don't spam your reply with "all that should have beens", that isn't going to help me one bit. I just need a clear, educated, and factual answer.