<s>[INST] I am 33 yr old male in good physical condition.  I started feeling some normal heartburn about two weeks ago when lying down.  About five days ago I started feeling dull chest pain/tighness.  It is more of a dull throb and is not very painful.  Feels more like muscle soreness in my heart area than anything else.  I am also experiencing what feels like dull weakness (though not at all painful) in my left arm.  Are these related or I should I be more concerned? [/INST] Hello and thanks for writing. I can understand your concern and would try to help you in the best possible way. The symptoms you are describing may be related to angina, though acid reflux or musculoskeletal pain may also be a possibility. It is my advice to you that you consult a doctor and get some basic cardiac workup like ECG or TMT or Echo to rule out any cardiac issues. Depending upon the cause suitable management plan may be formulated for you.In the meantime I suggest that you may not take any stress or anxiety and do not exert yourself too much. </s>