cancer sucks

I moved in with my father to help him in end of life needs, a little over a year ago I was diagnosed with stage 4 lung cancer. my father passed away a few months ago, we discovered that he was upside down on his mortgage. we sold the house, and the buyer was willing to lease it back to me, unfortunately rent doubled. I also have substantial heart problems. I do chemo one to two times a month. I do get SSDI but I have not been able back on top. My passion is helping alcoholics / drug addicts  find relief , I am a graduate from a treatment court program . my medical bills are growing faster then I can keep up with  18,198.40 at this point. I am now a statistic of do I buy food, medication, or pay a bill?