Pre Cum

Patient: I want to know if pre cum gets a girl pregnant. I did not have any sexual activity the day before and I had sex with a girl well not sex exactly my penis was inside her for 7 seconds and I did not feel like cumming or anything like that I just noticed that before I put it in I had clear liquid on the tip of my penis, but I cleaned it with a shirt before I put it in. So what are the chances that she will end up pregnant?