I Have Had A Cough With Gagging, Mucus That Was

I have had a cough with gagging, mucus that was green and yellow. I have a rattle when I am on my right side in bed. In the morning and at night I have this rattle.This started August first. I have been on steroid, and two other meds. They helped a little but I still have a cough and sometimes will gag and rattling during the day at when I lay down. It is not as bad as it was the first part of the month.
Mary