I cant take this pain, and before treatment

My tonsil cancer, never used to hurt but this past two weeks its been hell, my throat feels like its on fire, i didnt expect this level of pain before treatment does this mean the cancer hasgot worse.  Its went from a lump to my whole right side of my throat, paracetamol and codine dont touch the pain, in fact i think the long term use of paracetamol has caused headaches 

im literally cant take any more pain its constant, the oral morphine makes me nauseous