Um. You didn't cum inside her, so she isn't going to get pregnant, even if you shot a bit of pre-cum into her, she has little to no chance of getting pregnant. I don't think you need to worry, unless she is very sensitive to your cum and it fertilizes her eggs just like magic.
But honestly, for me (since I'm not part of this generation really.) You are too young for sex (14 years old, really?) and if you actually do knock her up, then it will most likely fuck your life over for the worst depending on your current situation and support you have access too. So either wear a condom, if you forget it. Don't have sex.