I'm very sorry Kanga, even though parents only want what's best for their children then can be really blocks in your life, I know it. But once you have 18 years old they can't control you, you're free to do what ever you are.
I would invite you to live with me but you aren't from Portugal
(could definitely use someone like you in Portugal)
As for the depression, well, you're a teen and teens are often depressed and with their self-esteem in low levels. When I'm like this I usually just try to survive my day in school, get home, turn on the computer and enter the fandom again, that always makes me happy
Hey if you need anyone to talk to, I haz MSN on my profile (and btw I also added you)