Wolf, I'm sorry you are depressed. Being trapped as an under age exjw in a jw household...Anyone would be, given the circumstances. I deal with depression also.
Reaching out like you just have can help. Are you able to come and go freely? Do you have a car? I highly recommend leaving the toxic household as often as you can. Spend some time out of doors. Go to the park. Start putting together a plan for when they kick you out, and if they don't kick you out, leave anyway. Do you have a job? If not, start thinking about supporting yourself. Focus on a household exit plan.
You have your whole life ahead of you. You're leaving the cult at an early age. I'd give my left nut to be your age again, take advantage of your precious youth!
Just try and divert your mind to getting out and making plans for doing so. It might help you feel better to concentrate on that.
I am sending you a huge internet HUG! We're here for you sparky!
TB-
P.S. Hang in there kiddo! Stay away from drugs and alcohol! They will only make thing worse.