Talk to Dentist on Temporomandibular Disorder

Assalam-o-Alaikum. I am experiencing a TMD issue for the past 2 to 3 years. One side of my jaw feels structurally locked, making it very difficult to open my mouth completely. The other side makes a distinct popping sound when moving. While it doesn't cause constant daily pain, I experience clear pain when trying to chew hard objects, and I am highly concerned about developing muscle-based facial asymmetry due to this uneven joint balance. I do not have a habit of daytime jaw clenching or nighttime teeth grinding. Please guide me on safe muscle-relaxing measures or low-cost diagnostic paths