I have been to the ER several times for chest pain but it is not heart related. Does anyone else have extreme pain in the middle of your chest? The docs never have an answer but when it is extreme I have problems breathing. Oxygen helps even though my ox level shows above 90 ( I carry an oximeter with me). Someone mentioned the cartlidge could be swollen due to sarcoid or the bronchical tubes could be having spasms because of the lungs being swollen and pushing against them.