It's clearly muscular problem ..
Muscles involves are bilateral .. SCM, TEMPORALIS, MEDIAL AND LATERAL PTERYGOID..MASSESTER . LONGISSIMUS CAPITUS AND CERVIS...AND .. SUBOCCIPITAL FASCIA. ..
Next Steps
plz approach to a sports physio with expertise in myofascial trigger points release therapy manually or with dry needling and TMJ joint mobilization ..plz request him/her to focus on these issues ..
Health Tips
u will be alright in 10-15 sessions ..u also need to learn some TMJ joint self manipulation techniques from your physiotherapist and jaw muscles strengthening exercises ...
regards