Me and my girlfriend were having sex, and mid way through we were switching positions and she was gonna get on top we were putting it in and the condom broke and it like slid down my penis. We stopped immediately. My penis was not completely in her maybe like 2 inches and like just right t the entrance of the vagina like past the lips or whatever u want to call them. I DID NOT ejaculate but I'm scared because of pre cum but she is on birth control but its if anything like extra dosage because she has problems that higher dosage of birth control helps she's been standing up for a half hour, I didn't cum and she's on birth control but the condom broke for like 4 sec. Help? Can she be pregnant?