I Have A Cough. I'm Wheezing -- But Not All

I have a cough. I'm wheezing -- but not all the time. No fever. Cough is somewhat productive, bringing up pale yellow mucus. At times I hear rattling in my chest. I plan to visit my doctor tomorrow, but I'm concerned about pneumonia. I have diminished lung capacity (~69%) due to asthma, and I take inhalers: Symbicort & ProAir. Thank you.