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If you have pain in neck, jaw, left chest and left arm for about two weeks and it makes you short of breath, weak and dizzy then you should at least go to the ER when you have pain and get a 12 lead EKG to rule out angina or heart attack.
A pain of this type can also be due to compression of the spinal nerves in the cervical spine region. This can happen due to overuse of computers, work involving straining of neck, canal stenosis, bone disease, spondylosis, poor posture etc.
Since a confirmed diagnosis cannot be given on net please discuss this with your doctor once. Hope this helps. Take care!
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