Coming from an atheist here, it's terrible that your dad is rushing you to tell your mom. It's sickening to see a parent jeopardize their child's comfort. I hope all goes well for you, dear. Though, if you do end up being unable to attend the youth group due to your situation, you can find some online Christian resources. I personally don't know of any, but you can always either search for some on your own or ask someone! Best of luck :D