I fear i have lunch cancer, i am very breathless & have had an ached in the right side of my chest & occasional back pain at around the same time. i am not coughing very much but feel as though i need to clear my throat alot. i have lost some weight & all of a sudden have lost my appetite. i  am very concerned as i have been reading about symptoms most of which i seem to have.
Thanks for your question on Chat Doctor. I can understand your concern. You need to first diagnose yourself before thinking of cancer. Bronchitis and lower respiratory tract infection (LETI) can also cause similar symptoms. Both of these are more common than cancer and easily curable. So better to consult pulmonologist first and get done 1. Clinical examination of respiratory system 2. Chest x-ray to rule out lung infection (LETI) 3. PUT (Pulmonary Function Test) to rule out bronchitis. Chest x-ray will also helpful in rule out cancer. So no need to worry about cancer, first diagnose yourself and then start appropriate treatment. Hope I have solved your query. Wish you good health. Thanks.