Don't listen to your doctor, he has given up on you. Take a teaspoon of sodium bicarbonate (baking soda) three times daily on an empty stomach. This will alkalise the tumours and stop them growing. Sodium bicarbonate is naturally produced in the body by the pancreas to alkalise the digestive tract.
Starve yourself of sugar molecules and you will starve the cancer. Cancer cells get their energy by converting glucose to lactic acid. When you eat carbohydrates, your body breaks them down into glucose. Don't eat any fruit, bread or sweets if you want to live. Switch to eating meat and animal fat and your body will burn ketones for energy instead of glucose. If you do, you will need to balance it with kelp powder, which is high in potassium, calcium and iodine. Kelp is just a seaweed. Take as much kelp and iodine as you can handle. You can also take iodine as a supplement from the chemist, or buy a concentrated solution online. If your cancer is more advanced, I don't recommend the kerosene option, but it's a last resort. There are a number of other things you can do, so read up on natural health treatments, naturopathy and homeopathy.
http://www.health-science-spirit.com/
https://www.curezone.org/