help a girl out

ok so my bf fingered me today and then earlier tonight he was asking me if it was good or not and what he could do better. so his mom takes his phone every night bc she’s v overprotective and keep in mind that they’re v v v religious and he forgot to delete our messages and she saw them. now she knows that he’s fingered me and that we were talking abt it. she read everything. i’m so embarrassed now and i have to see their whole family tmr and i don’t know what to do or how to act . oh also his dad is my cross country coach and we have a meet tmr. if you’ve ever gone thru anything like this PLS HELP ME IM SO SCARED AND FREAKING OUT!!