So, here is my question: me and my girlfriend had sex, but without penetration. Both of us performed oral in each other, she tasted something – which I presume was precum. Afterwards, the tip of my penis touched her vulva, but not too much, just entered a little bit, and for no more than two seconds.

I didn't ejaculated the day before, nor did I ejaculate before doing this. I would like the know if it is possible for her to get pregnant due to this – assuming there could be some precum in there during the contact – also, is it possible that semen leak out without ejaculation? Thanks in advance to whoever answers.