Hi Dr Christopher, From the past few months i am experiencing a sharp pain(it feels like someone is piercing a needle) sensation which starts from the middle finger of my left hand and it extends till shoulder... It use to come and go for once in a month or Sometimes Twice. But from the past  3 weeks i started to feel mild pain on the left side of my chest. In the beginning i thought it could be a muscle pain but now its been 3 weeks and im still feeling the same. can u plz help me with this situation