[eim]

Hey guys,
I decided to join teenhelp because I really want advice on an issue that's been bothering me for a long time but i don't really have anyone to talk about this with.
I'm 15 years old and I was raised as a Catholic, I was baptised and made my Communion and Confirmation. I have been going to church every Sunday for my whole life. To be honest, I have never really enjoyed it but especially in the past year ive been questioning what I do and don't believe. However, I still continued going to the church but in May I finally plucked up the courage to tell my mum how I feel and that I don't want to go to the church for mass every week. I thought that she would understand and respect my opinions and beliefs, considering I am 15 but I didn't get the response I want. She told me that if I dont go to mass every week she will feel like she has failed as a mother, even though my brother stopped going a few months before, at 17. She told me first I can make my own mind up when I'm 18 but she lowered that to 17 when I pointed out about my brother.
I'm so hurt that my own mother thinks so little of me as to not let me have my own beliefs. Forcing me to go every week is pretty much making me be someone I'm not which I think it extremely unfair for a 15 (almost 16) year old.
I'm not an atheist, at least for now. I'm actually not sure what I believe. I do know however that going to church every single weekend is not for me and it isn't something I want to do.
Can you guys give me any help or advice? How can I prove to my mother that I'm old and mature enough to make up my own mind and have my own religious beliefs, and convince her that I shouldn't have to go to church every week? I'm sick of being treated like this