Is Oral Contraception Required After Non-penetrative Intercourse To Avoid Pregnancy?

Hi, I was fooling around with my gf, she rubbed my penis against her clitoris area few times, I m not sure if I had pre-cum or not but I definitely dint ejaculate. I ejaculated on the side. Shes a virgin and I didn t break her hymen. Does she need to take any contraceptive pills to avoid pregnancy. She thinks shes ovulating and expects her periods ins 3 days. What should we do? We will definitely use condoms the next time we do something. Thanks!