Tony, welcome to OCF! Im sorry to hear about your situation.
I suggest heading for one of the countrys top cancer centers. Ask them if they have any programs for the uninsured. Many places have programs for help but if you dont ask about them they are not offered. To me, it sounds like you will have to advocate for yourself and find a place that will help you. Dont just go by location either, many top centers have free rooms for cancer patients nearby.
Some people have been able to do some types of work while going thru treatments. It is very individual and depends on the job as well as how they can handle their treatments.
Best wishes!
Cancer Centers