All your symptoms might be attributed to bronchitis
due to your history of smoking. I would suggest you visit your physician and get yourself evaluated. Meanwhile do steam inhalation 3 times a day. Drink plenty of warm fluids like water, green tea etc.
Another possibility is inflammation of the gall bladder
) due to gall stones
with RUQ pain radiating to the back.
Hope this helps.
Dr. Divya Kuttikrishnan