Are Wheezing And Popping Sounds While Lying On Bed Symptoms Of Emphysema?

Hi there, Am afraid to say I have smoked heavily 15-20 cigarettes a day for 15 years, now age 31. For the last 7 months I have noticed a high pitch wheeze on exhale when laying in bed. Also creaking/popping/bubbling sounds-mainly at night. On 2 occasions I have coughed up clear sputum in the morning. No shortness of breath, no general cough. Of course I will visit my doctor, and have redoubled efforts to quit (been trying for years.) I wondered, if possible, how likely a progressive disease such as COPD/emphysema is in my case or is there a chance the damage is still reversible/non-progressive i.e. asthma