Help me through this please.

[&&Ðяëāmÿ[ðòñò]]

Ever since I was finishing with fifth grade, I've been bisexual. I'm starting eleventh grade now, and I'm having plans on telling my parents at the end of my senior year. But now that my mom and everyone close to us other than my two aunts out of three and my grandma, found out that my younger sister has been having sex, last night, my mom said that she would not be bothered if we were having sex if using protection, or if we preffered women or both. I wanted to ask my preacher from church today when I saw him visiting the childrens hospitle where my four year old cousin was having a dangerous spider bite removed off of her skin covering her pelvic bone I believe, but I couldn't get myself to tell and ask him for advice. It seems easier to tell my friends at school and people on the net more than it is my family and other friends. I've no idea what I should do and if I should tell them now or stick to the old one. I've seen many shows with gays and such and they've all been kicked out or disowned by their familys. I don't want to end up the same way, not able to see my two cousins Jessica or Andrea because of who I am. What should I do you guys? Cause I don't know anymore.