Do u have any older friends or close relatives that may can take you to get bcp just in case Planned Parenthood doesn't allow you without your parent? I'm not sure of your age, but you do need bcp if your having sex especially unprotected. And maybe you should tell your mom because if u r having sex then it's time for pap smears as well.
Good Luck with everything
well, this is the bottom line. you will not get pregnant. if the condom broke, then i can say there can be a possibility the sperm had got in to you. yup, use BC. talk to ur OBGYNE and dont hesitate opening this matter to your mom because they know waaaay better than we do, they were like us before. she will understand. someday, ur doctor may not be available for you, but then your mom will always be there to help you and assist you. so better tell her about your sex life. if she is the type of mother that gonna freak out and would abandon you when she finds out, then better keep it to your self.
honestly i think your parnoid! and i think you should get on bc you can get on bc without your mom not knowing...if you go to planned parenthood they will give you some i belive