Could I be pregnant !!?

I was with a guy and we were hooking up. It was my first time. He went in me with his penis for like 2 seconds, it hurt so I told him to stop. he didn’t ejaculate in me, and he didn’t have a condom. And I don’t think it was even all the way in me. Is there a chance I could get pregnant just from that? Ik it was stupid what I did, and I probably sound dumb for asking , but I need reassurance.