My Son is 28 years old. He has been exsperincing pain in chest area, middle of his back , pain in ears , left arm tingling and tips of fingers , this has been going on for 6-8 months with chest and lungs and ears hurting, past two days coughing up blood... mucus is clear , said he has a chemical taste in mouth.. been to Drs several times , always something stupid! Works outside Fracking! Really worst now since it s cold outside! Called and said he s going to emergency in moring! Please help! Someone is missing something also lymp nodes swollen.. face swelled all the time!!!