Am I depressed? Am I?

Felt utterly sick today... Yes, i was laughing and joking, but inside i felt so sick. I don't know what's going on, just know that i was feeling terrible all along. In fact, i felt as if i wanted to walk out of the door and jump down. Totally devastated at what i was thinking of... I didn't want to die, but i just couldn't find a way to stop myself from thinking that way. I'm in no way depressed (although i just flunked my Physics and A-math) but i just keep getting that voice in my head.Face it, i think i'm sick.Anyway school was ok except for the test papers. And I'm gonna get S.H.E's Qi Huan Lu Chen tomorrow!!! So damn happy...