Girls, help me!!!

me and my boyfriend are both 17 and had sex on Feb 6th and we used the pullout method, my period was Jan. 23-28th and this app said my most fertile day was Feb 6th. Even though he pulled out he...(TMI)...fingered me after with cum on his fingers, I highly doubt that the cum on his fingers would get me pregnant but I'm still worried about that and also the precum, especially since it was my most fertile day. Have any of you or anyone you know gotten pregnant because of precum? We weren't trying for a baby, but we'd be open to the opportunity of having a little one!! I'm just wondering so I have a little insight, thanks! :)