I'm 29. i've been experiencing pain in my upper back, neck, and left shoulder area for a few days now. i seem to get this once every 6 months. help.

Pain on left chest: can be from heart, even though it is less likely in a young person. You need to get medical evaluation for this.

Pinched nerve: Because patients having cardiac problems can have these symptoms, you should have this ruled out. But the most common cause is an irritation of a nerve in the neck by a bone spur or herniation that can cause pain or numbness that runs down the arm into the hand. An MRI can usually show the cause of the problem if it does not resolve. Thank you for the question.