Help.

hello ladies. so i am 16 years old and i think i’m pretty educated when it comes to pregnancy. so. im still a virgin and my boyfriend fingered me about two weeks ago? and after that again a week after (didn’t shove his fingers in me). so is it somehow possible for me to get pregnant if he had precum on his fingers? also my period just came only after 14 days my last one ended. what is happening.