Very painful jaw joint on left side had it for yrs but its getting worse really hurts?

TMJ ?: Certainly sounds like it. Make an appointment with a local dentist to have your bite and teeth evaluated. No need for you to suffer.

TMJ/TMD: Sounds like a TMJ disorder. Since years old, see a TMJ expert. Any dentist can be a TMJ expert with the proper training and experience. Most commonly, oral surgeons, prosthodontists, and orofacial pain specialists. Ask your MD, your dentist and your dental society for referrals.