numbness in my left hand

Do not know wad is happen to my hand... :( my left hand had been numb since i ended project at 7pm... either is usage of computer is long, or something is wrong.. i hope nothing is wrong with me... damm scared. so i went to research... saw some of the symptons... :( numbness of hand could be cause by diabetes, kidney failure,severe case of carpal tunnel syndrom(do not noe wad is tis).. nw i am kina frighten.. maybe i am scaring myself.. they say numbness of hand could be coz by stress too... maybe todae was kina stress by teacher words and codes... lolx.. pray that it is stress.. i do not want to end up in a hospital... :( anyway, i will try not to use lappie for too long and slp too late.. and eat healthy.. sigh:(