COPD like symptoms. See a pulmonologist.

I have been getting recurring cold and cough since last 3 months of winter. It usually starts with coughing and wheezing sound while breathing and gets worse at night. Then it develops in cold and cough, goes away when I take medicines and comes back again in a few days/weeks. I have been smoking since last 3 years, but not chainsmoking. It has been limited to 2-3 cigarettes a day. I have stopped since last 2 weeks and haven't smoked while I had cold and cough. Since this problem has started, exercising or any other strenuous physcial activity flares up the breathing problem as well. I also have blue tint in my nails and itchy/watery eyes. Please suggest what it could be and what all tests to expect when I see a pulmonologist.