I dont understand

  The other day i heard a phrase i have heard my whole life....and my room mate looked at me when i asked the question the phrase brought up. She explained but she is not my religion and brought up stuff i dont believe, then called my mom and she asked me what i was talking about. She thought i was working myself up for no reason. the truth is i dont understand. Something i have known my whole life and i dont understand. It's weird...i want to understand. But i dont. I used to...but now it's all wrong and noone can make sense for me. I just want to understand and it worries me that i have gone to far away to understand. I need help. I am scared because i used to be so sure of my faith and now i feel like it's dwindled. I'm scared. i have never been this confused before....EVER!