if u want to take a break, then show a medical reason. Go to any diagnostic hospital or emegencies and  tell them that you are really depressed, say stuffs like u dont feel like sleeping,eating, and even feel like commiting suicide and stuffs. and say that u have relatives in some other state and u really need to see them. tell them that ure really alone...and so and so...guff nai guff dinu...
the doc will write something like " need a sem break"...and thats the key to your semester break. you can take a break for the follwing semester as well by informing the university that u still dont feel well.
a friend of mine, was going thru the same thing that u are now. he did the above things and got a break!