Left side stabbing, tight and dull pain in chest, arm, shoulder and jaw for 8 months, now arm feels numb disjointed & like locked?? should I worry?

Consultation advised. Sorry that you're having this problem, but it's impossible to give specific advise on the basis of one sentence of information. It's likely that more than one medical problem is causing your multiple symptoms. An online consultation at Heath Tap should be helpful or see your physician.