What is the treatment for chronic pain associated with wisdom tooth?

Hi doctor,

My wisdom tooth has been coming out for two years now, and there has always been a dull pain, but sometimes it gets really bad, and my teeth cut into my cheeks. On days like these, I cannot eat anything or have anything that has too much salt; otherwise, the cuts start to sting. I also get headaches from the pain. My dentist said I should take them out, but my parents would not allow me to. I am writing my final exams, and the pain has affected my studies. I have used teething gel, but it is expensive, so I cannot use it all the time, and my body has become immune to certain painkillers. I also cannot use strong painkillers because I am writing exams.

Are there any solutions or remedies that can help me handle the pain during my exams?