Hi Iam Christopher 23 years old I have chest pain on my left peck and down left arm with numbness in neck I went to doctor all test cam back got exg was good my X-ray showed a sight of pleurisy i have trouble breathing but no pain when I do breath I went to doctor yesterday got blood test and said my d Dimer we high and had a c scan see for clot in my lung which came back negative I have yet to figure out y Iam having this problem