Yes, anytime you have unprotected sex a girl can become pregnant. Please use a condom not only for birthcontrol, but for spreading/contacting stds. Also, 14 is very young to be having sex and I personally feel that she is way to young to even understand the full results of her actions, but you already know that.
no, it could very well have. pre-*** still has sperm in it. even if you go for a long time and do the "pull out" method the girl can still get pregnant because pre *** has sperm in it.
so will my pre cumm that might have come out while we had sex wouldndt have done anything
pre *** from the day before isn't going to get her pregnant as long as you cleaned yourself very well since then. And if you get her pregnant, which I personally doubt, I dont believe you will go to jail. However depending on what state you are in the age of consent varies. So, you might want to look up the age of consent laws for you state/city.