Help with Medical Bills

I was diagnosed with cancer in March 2013.  I followed all doctor's orders and completed three months of daily radiation, weekly chemotherapy and internal radiation treatments that took a toll on my body.  I fought the fight and kept working as long as I could keep the strength.  I was told in October 2013 that I was cancer free but would need to follow up every four months.  So, at the end of January 2014, I had my PET scan and found out two weeks later that the cancer had already returned and the tumor was larger than the initial diagnosis.  I have had surgery as well as additional chemotheraphy and still ended up in the hospital for transfusions and infections.  In the middle of my treatment, my husband lost his job (and the insurance for my treatments).  This just added another burden.  Just received another bill this week for over $11000.  I am working and trying to keep things together, but any help would be appreciated.