Acupuncture helps in opening up the energy level ( commonly referred as 'Qi' in acupuncture theory).
Acupuncture needles are put on various parts of the body which helps in increasing the blood flow.
It has an anti inflammatory effect. It stops body's inflammatory response, increases blood flow and relaxes muscle tone. It helps in flushing out toxins from the body. Acupuncture releases endorphins which are natural hormones to reduce the feeling of pain and puts the patient in ultimate relaxed state i.e feeling of well being.
Electro acupuncture pulsates electric current through the needles.
Such procedure gives quick response and helps in reducing both pain and inflammation in people with arthritis.

Based on the MRI results, it is possible that your pain is due to disc bulge. It is necessary to consult a qualified orthopedic doctor for proper diagnosis and necessary treatment plan.

You may have a muscle­ strain in your left shoulder blade. This happe­ns when you use that muscle a lot or have­ poor posture. You may feel sharp pain, e­specially when moving your arm. Try gently stre­tching and putting ice on the area. Do not do things that make­ the pain worse. If it kee­ps bothering you, you might need to se­e a physiotherapist for help.