Random numb feeling in cheek and jaw (right side) tight neck muscles, anxiety, stress something else?

A lot of things: Your symptoms may be related to stress but numbness needs to be fully evaluated as it may be early signs of something serious. You should see an oral ; maxillofacial surgeon to determine what is going on and make a definitive diagnosis or referral.

TMJ-TMD : TMJ disorder is the second most frequent cause of orofacial pain after dental pain. The common symptom are: headache, jaw pain, neck pain, eye pain, earache. Proper diagnosis is the key for the successful treatment. This disorder will not resolve on its own with home care. Rec.: orofacial pain specialist for evaluation and treatment.