she’s anxious

i have a friend who knew i had this app and wanted opinions on it, i told her i think she’s paranoid. her and her bf were messing around and she was on his lap in just panties and him in just underwear. they were like this for maybe 2-3 minutes tops. she was wet bc they had been doing things, and he was hard. she says that NONE of his pre cum had come through his boxers and gotten on her panties. but she is scared that if any of it had could she get pregnant, and what she should do now