Hi Lisa
I am sorry to have to be so blunt but your doctor has already told you that you will die without treatment. How fast is impossible to say as oral cancer affects so many parts of the mouth and grows at different rates in different people. You are in a tough situatio with no insurance and no cancer centre in your area but I am sure your regular doctor will be help you manage this. Have you been to the oral surgeon yet? What did he or she say?