Medical Bills Payoff Campaign

My name is Dawnya. 
 I am asking for help to pay off my medical bills.   
I was diagnosed with Leukemia when I was 2 1/2 years old.  I have  run into side affects or complications from my treatment.  Cranial Radiation was used as treatment for childhood cancer patients in the 70's,  and it is now known  to cause brain tumors in patients  where radiation was used.  Thirteen years ago I had a benign brain tumor removed.  I have two more tumors that have grown and they are in two different locations.  My tumors were sent to the tumor review board by my doctor at Barrows.  The decision was made to start radiation therapy.  I have already been sent a bill for my portion of the MRI.  I do not yet know how much the radiation therapy is going to cost.
I am asking for help since I do not have thousands of dollars sitting in my bank account.  I am a preschool teacher, and I want to do the right thing and pay off my bills.  However, I  would like to avoid being sent to collections when I cannot pay my portion of the bill.
Thank you to those of you who donate and thank you to those who simply read my post.