Can i go home?

I know it's impossible.. or near to impossible.
I have no money.
I know if i tell my parents, they will let me fly home as soon as i want.
But i know it well
It'll be an extra expenses for them if i go home.
It's hard enough for them to earn and loan enough money for me to study here.
I know i shouldn't be selfish.


but...
i seriously feel like going home.

never in my life i feel so home-sick before.
never.
i feel like rushing home as soon as i finish my finals.

can i be selfish?