I am feeling very depressed (very long, would like someone to talk to as well?)?

That's messed up. Sugar, you can't handle this all without the help of a mental health professional. Self harming is a mental illness. Right now it might look trivial to you but in future it can turn into a big problem for you. I have went through all that there was a point in my life when i had no friends because people thought i was insane. All this has a lot to do with how you feel your parents treat you. The good news is, you can stop feeling so miserable with the help of some therapy or even medicines. You can live a happy normal life. 16 is a very young age, you have a long way to go. Check with a doctor fast, and start your life anew. Good luck!