depression is takin over my life

I been feelin so depressed lately. im just so emotionly.
im from a diff country and .. i just wanna go back home so bad. i miss it so much , i have a wonderful boyfriend over there. the best family ever ,,
here i just feel like i have nothing :( i have friends and all but i feel like i can live without them . u no .
n now i might not be able to go home this summer .. and im just so upset bout it.. i dont no wht to do :(
cryin is the only thing i can do and of course write alittel .. but thats alll ./ theres no one that understands what im goin through becuase all my freinds are american and they been here there whole life..
any advice would be helpfull
thanks