Diagnosed today as COPD

[xers]

I am 44 and i am an Ex smoke, smoked for 10 yrs and have stopped now since 4 yrs .  When My PFT was done in 2011, My Lung capacity was 60 before bronchodialtor and 62 post that . I was asked my Pulmo to do a CT scan and Xray of my lungs and all came normal .
I repeated my PFT on 2015 , the lung capacity was 69 before bronchodialator and 72 Post .  I was told that I had astma and was on an inhaler .
Today again I went for the PFT , The lung capacity improved to 72 before bronchodialator and 74 post it . Pulmo said that I may have a very mild COPD and it is good to start on a new inhaler which is released for COPD which would stop any progression .
I have no breathlessness and I excercise and not overweight . I do have sleep apnea and on CPAP .
I dont know what type of COPD I may have .
Today's PFT results are below
                      Pre-Test                                   Post-Test
FCV[L]             75                                             77
FEV1[L]            72                                            74
FEV1/FVC       100                                          100
PEF[L/s]           110                                          118
MEF 25-75          53                                          56
MEF75              77                                            108
MEF50              59                                            84
MEF25             44                                             37

Interpretation : Normal spirometry
Result : Your FEV1 is 72% predicted and lung age is 74.

Any insight into the results and tell me what type of COPD is this?                    

[xers]

Forgot to mention that Last year X-RAY was perfectly normal.