I have left shoulder pain that is down to shoulder blade & is now causing arm pain everyday. what can i do or what could cause this?

Shoulder pain: Thiose symptoms sound as muscle pain probably muscle spasms, but you should have a dostor check it to be sure.

Pinched nerve?: There are many things that can present this way. Part of the differential is a cervical radiculopathy or radiculitis (this is when nerves in your neck become pinched or irritated). If your symptoms persist or worsen (such as weakness), seek medical attention. Commonly (if this is what you do have.), a trial of physical therapy is very successful, but occasionally, surgery may be needed.

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.