I ve had a feeling of chest pressure, shortness of breath with extreme fatigue and weakness for almost a month. I ve recently, the past few days, started with intermittent pain between my shoulder blades. Xray revealed emphasym and a 1cm nodule, which was confirmed by CT...in right upper lobe against a rib...and had PET scan which was negative for cancer. There were also other smaller nodules the Radiologist felt was scarring. In 2012, I had a completely normal chest xray. Symptoms are not getting better with Albuterol inhaler, steroids or antibiotics. I also had an MI in 2010. I am currently trying to quit smoking but do smoke. Is there anything my Doctor should be looking into? Also, is there a possibility PET scan just didn t pick up that nodule is cancer? I m feeling hopeless of ever feeling better and looking for anything that may be getting overlooked. I appreciate your time and any information you can offer.