Focus on your studies.  I am assuming you came here to attain a degree, not to work.  When you graduate and get a job, then send as much money home as you can.  Nursing is a good field to be in and you will find a job relatively easily.  But don't be distracted.  Don't ruin your status, your future for temporary, short term gains.  I hope your family will understand.

I guess this advice is obvious, or should be obvious.