What am I suppose to do about this?

I'm 13 years old and I have a lot of issues. I see a therapist every week and I'm gonna see a psychiatrist on friday. I went to a mental health place in december of 2009 for anger issues. And ever since then I haven't had a meltdown. But today I did. I don't know whats wrong with me. My mom and therapist think I have depression. I'm crying right now because I know for a FACT my family will NOT be supportive. Earlier I heard them making fun of me and I heard my mom, out of everyone my mom, laughing. That really hurt my feelings.I feel like I can't trust anyone. If you read my other questions on my profile you'll understand the CRAP i call my life. But I'm still sad even when there is nothing to be sad about. I understand if you guys think its just a teenage thing but if you read my ?'s you'll see its not. I need advice,help, and small thing will help a lot. Answer or e mailing me would be awesome too. I just can't live like this anymore. I need help.