D&D(Down and Depressed)

yeah~~done mathematics papers...but...haiz...prepared so long and so much...and today's paper end up in a mess...why~~~~~ahhh...going to be worry for some time before i able to forget bout today's paper..the only subject i got hope to get an A..but mess up like that...AH!!!wanna scream...like everyone around me is doing much better than i...quite discouraging and depressed actually...im so down at this moment..dont feel like wanna do anything...=.=