I ve had a mild sharp chest pain on the upper left side chest that comes and and goes! The last time I was at the doctor ( ER} He said I probably had a tcm now I cant remember but it was something with three letters any way he seemed to think I would stroke out within a month!!! that was 7 or 8 months ago. more recently today the pain came back and while experiencing it I sneezed, the sneeze made the pain worst and then I felt it go down my arm!!! also that first pain started after I had a port removed that kept clogging!!!