about a year ago last year in January of 2016 I became an atheist after so many questions and being confused all the time. I've been having doubts ever since I was smaller like around 13.

& etc... and my parents are really catholic & also I have them mean Mexican parents lol. and I'm terrified to tell them that I do not believe in god. every Sunday or every 2 weeks when it's Sunday they want to go to church and I refuse to go and they get really pissed off about it, so I just go. I just don't belong there anymore. and I get a weird feeling inside of me whenever I go to church. I'm 18 and sooner or later they have to find out. any advice on how I should tell them?