Hi ~ Is there some way you can see a therapist. You really need to be seen!! I'm very worried about you -- your depression sounds quite severe, and you need treatment.
Can you at LEAST see your medical doctor? Talk to him and see what he says. If HE recommends a therapist, then HE can talk with your parents. And at the same time he can put you on an antidepressant to tide you over until you can get into therapy. If he should put you on an antidepressant, you must remember that it takes awhile for these medications to work. Some take just a few days, while others can take weeks to work. Ask the doctor how long YOUR medication will take to work.
But PLEASE at least see your doctor. Your parents certainly can deny you that, can't they? Tell them you're just not well -- whatever you have to tell them to get to the doctor, but GO. And tell the doctor EVERYTHING. Please go!!! Your very life may depend on it. God bless and please keep us informed as to what's going on, ok? We DO CARE. Hugs, Lee