(Sorry for the long post, I've included some background information on the events that have occurred which have had a large impact on the decisions I've made. This should give everyone a more clear picture of what I'm going through and why I'm going about it in this manner.)
No, unfortunately they're not supportive. I came out to my real dad as trans (my parents are divorced)** and he took it well for a little bit but then suddenly changed things and told me it was a phase and intimidated me in conversations saying I'd never be a real man and "have you even slept with a man yet?? How can you even know you like women?" (side note: I was with dating same girl for 6 1/2 years but they never knew)
I tried coming out to my mom and telling her I like women in highschool however when I did that she left and the subject has never been touched since. She is uncomfortable with it and will get up and leave the room if I bring it up so I can't even talk about liking women infront of her, god forbid being transgender.
The reason I want to start hormones before I move out is so I can get a head start and have the changes started so that I will be a little more comfortable meeting new people in my new town. I know I could always tell my parents I'm trans right now however I don't want to be kicked out of my house earlier than I'm ready to be, and I"d like to stay here as long as I can, but I honestly can't go on much longer without changing something.
**Background notes: I sent my biological dad an email coming out to him that my stepmom read. I haven't brought the subject back up again since then because my dad was very intimidating and cold hearted when we spoke about it after he had thought about it. I am NOT under my biological dad's insurance, I'm on my stepdad's insurance
**Extra note 2: When I sent the email to my dad I'm fairly sure he sent it to my biological mom even though I requested him not to because I know she's not accepting. This bring me to point #3
**Note 3: I believe my mom was sent the coming out note by my dad because when I had just turned 18 I cut my hair short and when I came home my mom had a meltdown. She cussed, called me names, and said things like "why do you hate me??" "You're so ugly" "How could you do this to me" and she had also mentioned "What?? Do you want to be a boy??" which I think means it's possible she assumed that after having read the coming out letter. The night I came home with short hair I was kicked out of my mom's house because she couldn't bear seeing me with it, and when they finally let me come home my stepdad scolded me for cutting my hair and gave me grief because "thanks to you, I didn't get any sleep. your mom was hectic and threatening to kill herself the whole night"