While your waiting for others to offer advice, please check the resources tab at the top of the page, and go to www.cancer.org and check with the social workers at the Hospitals in your area, lots of them have public assistance programs. Be sure to check any of the County or City Hospitals as they are more likely to have assistance programs. When you get in touch with the American Cancer Society ask for a "Patient Navigator" this is a persone with American Cancer Society that looks for resources specifically for your case.
Otheres will come along soon with more help.
Thanks for posting here.