Pregnant fingering

So I’m 15 and I’ve never had sex with a guy before, recently around the 12th of this month my boyfriend had fingered myself and a day after I got very paranoid that I may be pregnant because before he did anything to me he was doing some stuff to himself but he never had fully ejaculated. So I was thinking that maybe his Precum could’ve gotten in his fingers before he did anything to me. Of the 15th I did get my period but I know that technically doesn’t mean I’m not pregnant. I have no idea what to think. I’m really really scared cause I didn’t intend to try and get pregnant. I would appreciate if you guys disregard your judgement because I just want beneficial supportive responses thank you. What do you guys think???