what should i do?

please don’t tell me to get educated on sex before i have it, i’m an adult like EVERYONE else we grow concerns. my boyfriend and i were doing some foreplay, he came and started fingering me with the hand that has cum on it. not too much but enough, should i take plan b? i’ve has unprotected sex with him for a while and never got pregnant. we aren’t necessarily ttc but having fun sex and if it happens we will be ECSTATIC but not going to stress over it. please comment!!