Is Pregnancy Possible Without Penetrative Intercourse?

Hello, my girlfriend is in her fertile week, two days ago things got heated up and even though we didn t have intercourse, I was rubbing my penis around her vagina I had cummed before and I cleaned myself but we are concerned about the precum so she took plan B with in 6 hours of the situation and now she s having serverical mucus and we are not sure if it s because of the plan B or if it s her ovulating. Is there a chance of her being pregnant?