Had drunk unprotected sex for about 3 seconds... What are the odds of me losing this battle? I swear I'm never going to have sex without a condom again! This feeling sucks!

Basically I forgot I had a condom, 3 seconds into the vagina I realized I had it... So I whipped it out and threw it on and continued. What are the odds of this chick being pregnant?

thanks, lesson learned.