27f, had all tests done at er for heart all came norm. so y do i hve chest pain. left arm pain and copper taste. weird feel wth tongue?

Gastro/esophagitis: that copper taste you described probably meant you had upper GI bleeding. you need to see a GI specialist ASAP -- in the mean time you could also take Prilosec or Zantac (ranitidine) twice a day (they are over the counter meds, if you didn't take meds for GERD)

Go see a neurologist: The problem may be a pinched nerve root in your neck. Go see a neurologist.