Help with talking to family about depression?!

Help with talking to family about depression?

about a year ago, i started to feel depressed, and started self-injuring. i went to my parents, and told them what was going on.. they basically yelled at me & told me i could get better on my on.
but now.. its been a year, and im just a lot worse.
i dont like to leave my bed or interact with anyone.. and i dont have the energy to do anything, yet i just yelled at from my parents about it. they dont understand how i feel at all.
they also say a lot of stuff about me, and then wonder why i have no self confidence and why i hate myself so much..
honestly, i just want to be happy.
i want to stop feeling like this. i know i need help.
i really want to write my mom an email about how i feel about everything.. but i dont know. i just dont want to get yelled at, and it seems like no matter how hard i try, theyll never understand.
i dont know, i just want the pain to stop..

omg, how old are you?
cause im 13 and in the exact same situation.
i just started being depressed this year, and at first my parents would just yell at me about how i would never get out of bed or leave my room to go anywhere.
but then my mom started to understand, and she took me to a doctor to get medication for it. so ive been on the medication for about 5 months now. and it actually does work, taking it sucks and i feel like a freak but it helps with my mood a lot. and sometimes i just break down and feel helpless, but depression hurts. im really sorry :/