Hi. Basically i am falling Apart. Had a cough for 3 months, well not a cough a tickle in the throat. Been to doctors they have done tests x rays clean, but its not taken away the symptoms now i have shoulder and arm pain that comes and goes been going on for days now. I am constantly coughing into a tissue to see if i am coughing up blood and i am coughing up something, but not sure what it is. I am so sure i have lung cancer and they have missed something, but nobody is listening 38 and i am living in hell and i am sure my husband is going to divorce me. Please help me.