What can I do?

So my jaw at the side has been hurting for a long time. This specific side which is my left side of my face. It hurts like everyday and it also gives me a headache. They kept on saying to exercise it but it obviously doesn’t work and money is wasted for those pointless appointments. Please help me figure this out. My jaw really gets tensed, it cracks it feels like theres a rubber pulling my jaw. Its affecting my whole head that I can’t function anymore. I can’t keep ignoring this cause it’s really affecting..