There are several concerns. The most dangerous is lung cancer, which is possible given your smoking history. The other major possibility is infection, such as bronchitis or pneumonia (particularly Klebsiella). You should see your doctor and have a chest xray.
You need an xray of your lungs and throat, do you experience an6 discomfort? I would: suggest an appointment immediately. Good luck and you should consider stopping smoking hardest thing I ever did but the best choice I ever made.