We were fooling around, I am still virgin, he touched my vulva with this genitals

Last night, I was at my boyfriends and we were fooling around. I am still a virgin. the tip of his penis, touched my vagina. Not sure where exactly, vagina lips or Vulva. Not too sure. That lasted maybe a couple of seconds. He got off of me, and he laid next to me. A minute or two later, he ejaculated. And he did not ejaculate near me. Would there be a chance of pregnancy? He said he did not ejaculate before this one time, and he says there is no Precum. As I mentioned I am still a virgin, and he did not go inside me. Period: Lasts 4-5days 28-29 day cycle Last period April 29- May 2