Not exactly sex

So I have a question for you all? I was sexually active with my bf but he never entered me and sperm never went into my vagina. I know this is weird to ask and prob such a virgin question, but is it possible I could become pregnant after our interaction. Even if there was no cumming involved for him and he never entered me, but was close to my vagina while he was excited? And there may have been pre cum. Please help.