When can one re do medical after being declared unfit ?

My wife was declared unfit yesterday by the medical centre and they uploaded it in the system. They found a small spot in chest x ray although outside the GAMCA centre chest x ray found normal.Her visa will expire on May 17. When will she can do re medical?  When I can apply for new family visa? Is there any obligations? Pls help.  I am new in kuwait. Please help with some advise so that I can find a way out.