Check r/legaladvice. Keep yourself going. It sounds like his mother is going to be a good rock for you now, if you need it. Stay safe, even if it means laying low for a bit. And remember to breathe. Things suck, but at least you found out who he was now, instead of months or years later. And if you need anyone to talk to, you've got plenty of people on here who can lend you an ear or a shoulder.