please answer truthfully 😞

Okay so I'm 16 and my boyfriend and I have been together for two years. We have never had sex or anything but we do like to screw around. Last night according to Glow I was ovulating and my boyfriend and I got together. We were very careful but still I freak out so easy. What are the chances of becoming pregnant from precum on his fingers that then go in my vagina or around my vulva to get me pregnant?? All actual cum wasn't near my vagina I'm just scared of precum..😱😱