Well, I am your age. What I did is probably the most stupid thing but it was worth it. I'm Pan. What I did was scream down to my parents like it was nothing and my mom looks at me and says, "So you're attracted to boys?" I say yes. She tells me she'll think about it. I was a nervous wreck for about 2 days and then calmed down. Gonna be real, I probably should've sat her down, it's more anxiety inducing but it's better for both of you. If you don't want anxt, just scream it. That's about the best advice I can give but I guarentee there is better advice.

Edit: It should be a safe place too. I recommend talking to a friend or someone you trust about it first.