How to tell parents about being transsexual?

I'm 14 years old and currently I'm legally a woman living in the USA.

I always felt like I wasn't placed in the right body and I have almost no social life because of how stereotypes of women are implied to most girls in my school (which I'm the opposite of).

I always wanted to be a man and acted, dressed, and tried hard to avoid the woman stereotype my parents have been trying to raise me as.

I don't have a sexuality,I love people, not genders, so please don't suggest I'm just a penis envying lesbian. I am sure that I will only be happy if I can live as a man.

I've been hiding my true desires all my life and going along with my Christians,Republican parents' womanly life they have applied on me, because I fear they would think I'm crazy and send me to therapy.
(While in the car awhile ago, I just said to my mom "I want to be a man", she replied "If you do, I'll send you to therapy tomorrow",I then told her I was just kidding, but it hurts for me for her to think I'm normal and lying to her face)

Recently, they have let me cut my hair to short,masculine length and let me use some male bath products (male hair paste,shampoo, etc.)

When I think hard about the place I'm in at the moment, it's so hard to just type about it. Going through puberty in a woman's body, using a woman's restroom, and giving into womanly stereotype sometimes brings me to tears.

I want to start taking some kind of hormone treatment before I get womanly curves and such, I know I may be young but there are non-black market, non-prescription products that help lower Estrogen and help increase Testosterone (yes, woman produce it too, just much lower than men).

I just can't bring myself to tell my parents about it, they would think I'm nuts and just going through a phase because of how I let them apply womanly stereotypes on me and appear happy with it.

I need a way to explain my situation without appearing crazy and persuade them into letting me get hormones.
Also, If you have any way I could just start to "hint" my parents into the idea so when I tell them they're already suspicious about it, it would help a lot. :)

well idk wht its like to be a woman and want to be a MAN but i do know what its like to be a lesbian.......its hard to tell but you just have to get it out and make sure you parents know.....im 12 almost 13 and am a lesbian and it took my parents a long time to get used to it but finally they excepted me as i am and now they still love me like i was a normal child

Lesbiangirl101 =-)