Hello!!! im going to the doc tomorrow about my breathing... i already have bronchitis and i have ben smoking?

for 6 years... ok this is what im having.... any physical activity i do.. say like walking,, im always out of breathe... and alot of times.. when i breathe i hear like a whislte sound... i don't have much of a cough.. and i has racing heartbeats... can this be copd plz polz help.. also i have not ben eating as much as i used to and i have ben hocking up.. lots of sputum from coughing and clearing my throat.. it feels like i got to clear my throat like every 5 mins.. the color of the sputum.. are.. black grey and yellow... plz don't give me answer like quit smoking cuz i no i have to