Hi doctor.. I read some of the replies here wherein you've mentioned that the penis has to penetrate the vagina for pregnancy to occur, which I understood. But just to clear my doubt, there was an other renowned site called scarleteen which says that even if the penis touches the vulva, there is a moderate risk of pregnancy.
Me and my boyfriend were indulging in bare genital rubbing the other day and he although did not ejaculate near my vagina, definitely had some precum.. and his tip even might have touched my opening.. So I'm a bit nervous because of what I read on that site.. Thank you for your time.