It seems that your condition per DSM 4 TR used by US based psychiatrists is "adjustment disorder with anxiety and depression feature." Other term is also labelled as "reactive depression." It should not last over more than few months and if it persists you need a Psychiatrst. Is it man you are new to USA and having a "cultural shock" in terms of your disorientation to the naya desh and bhesh. Every thing you hear and do is getting to alienated. If show then man, you need to help yourself by using common sense strategies like going out and meeting any one in the street and asking few questions, reading local history in local library or going out shopping by yourself in Chinatown or Asian bazaar to get familiar with Asian taste and smell in USA, go out dancing, go to movie and build up your activities to get familiar with your neighbourhood and local people and much more. The more idle you may remain you will be more prone to yesterdays of Nepali good sheltered life and fall more blue and lethargic. Be up and away man.