Stop using the computer.....
and get anti-depressants...
can't eat,can't drink,can't sleep sounds like psychological inhibitions rather than anything physical/physiological....(i am not a doctor at all :D)
try figuring out the solution to ur problem LP...if u have the solution then there is no need of worrying,if u don't have the solution even then there is no use of worrying or getting tensed..
you know what the solution is ... i.e. a doctor ... get a blood test done and see whats wrong with you and what you lack. Nomi is right it might be depression as well. So, try to be positive and stay happy and force yourself to eat properly and drink more water.
I agree with what has been said, it does sound psychological, ie depression related. You do really need to start eating properly as that will have a significant effect on a number of the other things you have mentioned. If you can make changes by yourself such as eating more, and finding out what is causing you stress, then do so. However, if you are feeling ill and not getting better, then def go and see a doctor, as it maybe hormone related.
No need to go to a doctor coz he is right here. Well to begin with, did you get your iron level checked?. And
why are you stress and what are you stress about..i think as a doctor it is important to know as if there is
anything personally and physically effecting you.