Dear MsDarcy,
You have been experiencing numbness and tingling in your left arm associated with occassional dull chest pain. The numbness and tingling in your left arm could possibly represent compression of a nerve to that area. However, the most serious potential cause, the heart, needs to be evaluated. You should schedule an appointment with your doctor who will most likely evaluate your blood pressure, along with obtaining an ECG and a stress test. I would recommend a visit sooner than later.
Thanks for your question,
CCF-MD-KE