I don't know if I have emo problems or if I'm sensing how a spirit feels. because almost everyday when I'm at home I feel sad for absolutly no freaking reason. and when I'm at school 8 hours a day I'm fine and calm. but when I'm at home I get so sad that I actually do cry. but like I said at school I'm the opposite, I'm calm and happy.
Is it possible that it could be family related? cause I haven't ever had the "best" relationship with my parents. and is it possible that if my parents said/did something that could scar me for life, does that has anything to do with me feeling sad for no reason at home?
And when I was in 5th grade I was in band class and I told my mom I've always wanted to try the drums, but my mom said "no, drums are boring", so I said "okay I'll play the trumpet". then a few weeks later I overheard my parents talking and my mom told my dad "I don't even know why she even joined for band, she doesn't even like music"....which is a lie! I LOOOOOVE music! and I joined for band to make my parents proud of me for acomplishing 1 of my biggest dreams which is to be a musician!! and we have a really awsome looking guitar here at our house, and it cost us $100 to buy it, it was a christmas present for my dad but he never plays it. It's really sitting here collecting dust, I put my hand in the box to see how much dust was in it and there were 3 cob webs i found! 
and I asked my mom what we should do with the guitar and she said "you can have it" and that made me happy, but then she said "I'm not allowed to play it cause no1 wants to hear it, and Whose no1,...we live in the middle of nowhere!!!
Just remember, we parents make mistakes.. I told my daughter this many times, and I apologized to her when I realized I had been too tough or insensitive. Keeping communication open and honest is the key for that, which she and I always did/do.. but if you dont have that with your parents, it could make it especially hard to deal with, I understand that. If you cant talk to them, perhaps a grandparent or supportive friend? This is probably one of the craziest yet most intense times of our lives when we are teens, and sometimes problems seem like mountains to us, but time has a way of smoothing things out and giving us a different perspective.. I hope this happens for you soon.. If things get overwhelming to you though, I would seek help from a doctor or other professional.. Best of luck..