Left sided jaw pain not bad pain just irratating pain level 3 and muscle cramping in jaw with tightness i chew gum all the time. could this be tmj?

Definitely, yes: Temporo-mandibular disorder is the second most frequent cause of orofacial pain after dental pain. The TMDs are not self-limiting and require active treatment interventions. Proper diagnosis is the key to the successful treatment. See an orofacial pain practitioner for a consultation. They are the expert in this field.

Yes: 2 suggestions: 1) See your Dentist to evaluate your joints. Orthodontic and/or Oral Surgical consultations may be in order, and 2) Rest the joints...stop chewing gum. I know that's tough to do cold turkey, but if you stop chewing and symptoms diminish it's an important diagnostic test.

Stop gum chewing: Yes, likely TMJ problem. First, stop the gum chewing. If problem persists, see 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.

TMJ dysfunction: The muscles and ligaments that cause your jaw to move are not working smoothly. Stop chewing gum. This is a major source of TMJ dysfunction. Eat softer foods next 2-3 weeks. Apply moist heat to the joint area. Stress plays a big role in triggering TMJ problems. Find activities to help reduce your stress level. See your dentist for more detailed help.