Gah, how upsetting. On my first endo visit, I was so worried that I wouldn't get my T that I was...well, a real mess. If I hadn't gotten it, I would have been even more of a mess.
Okay, at least you have a specific date to look forward to, and maybe you'll be able to start before then. And at least you are communicating with your parents. That's a real plus.
It sounds like you are handling it pretty well, but don't be surprised if you have some...call them relapses. Of disappointment, of frustration, of anger. But six months is not so bad. You can have one helluva birthday!