Hi, My Boyfriend And I Were Rubbing Genitals And It

Hi, my boyfriend and I were rubbing genitals and it was very briefly, probaly twice and for a minute each. He did not ejaculate however there was Precum. Though his Penis did not go in, could Precum on my vulva or around the vagina cause pregnancy? He thinks he peed before we saw eachother in the night...and he most likely did atleast once during the day. I am wondering is there a chance of pregnancy if Precum got around my vulva?