Please help me out! I don't know what to do!?

I am a 14yr old boy. My mom and dad are both Christians, strong ones in fact and want to have me confirmed. Thing is, I am an atheist. They don't know that I am atheist, but I don't know what to do. I hate going to church and when I express that I disike it, or don't want to go, they freak out and punish me. One time my dad even backhanded me extremely hard and I Got a black eye. I'm afraid if I tell the or they find out I am atheist, they will A). Force me to conform to Christianty. B). My dad will beat me really bad as you read what he did when I said I didn't want to go to church. C). Make me breakup with my girlfriend (atheist) and won't let me see my friends. Or D). Something worse

I need advice on what to do, an no I wont get confirmed to make them happy. I hate when they cram their theistic ******** down my throat.