feeling imbalance

i am starting to feel really imbalance now. i duno why but there is this bothered and snappy 'me' inside of big me now.
why is everything starting to piss me off?
past few days wasnt well so i can understand i aint happy. but now i m all well n healthy , y m i still unhappy??
i dunno what is the root of the problem
i jus dun feel happy
i dun even want to pick up calls or sms.
there is something really wrong

maybe like pureblondie put it, im really fucking screw up mentally....
physically im just draining away....