I am sorry you are going through this without the support from your family.
I am sorry they don't seem to understand all you are going through.
Are your parents willing to let you see a therapists? You might find support there.
Resources vary depending upon the area in which one lives. Any trans* support groups in your area?
Unfortunately, many have to wait until they are 18 y.o. before they start T.
You could change your name by asking people to call you by a certain name. You can change your name legally when you are of age.
Do you use a binder?
You'd likely do better with all of this if your parents were cooperative and would help to set you up with a therapist. Have you asked for a therapist?
Do you have any support... from siblings, friends, guidance counselor, pastor, anyone?
I hate to think of you living all alone with this.

WC