HELP PLEASE. COULD I BE PREGNANT?

So I was turning on my boyf and i was giving him a blow job when he fingered my ass. Then he tried to put his dick in my ass but all of a sudden he put it in my vagina. I automatically reacted and told him to take it off and he did... He put in me for like 1 or 2 seconds and of course he didn't cum in me and I think he didn't pre ejaculated in me but I'm still unsure. So could I get pregnant with that??