Depressed

Once in a time, every emotion you can think of are wandering around in my body, mind, soul... everywhere; like anger, happiness, love, hate...
and everytime that happens I just wanna burst out in tears or scream as hard as i can!
When this happens I feel depressed, all I can think of are bad things, and once I finally made up a good thing I'm starting to look at it in a bad way.
Even at school, when someone says something mean or insulting normally I don't care and just say ''fuck you'' but now I wanna cry so hard and I don't even know why...