I was diagnosed with mild COPD in 2006 and then moderated in 2016. I never stopped smoking and had no symptoms such as shortness of breath etc..but about a year ago I notice I can hear crackles (and sometimes rhonchi) only when I lie down on either side for sleep. I'm going to make an appointment with my doctor.
My question is: Do other people hear these sounds when lying down and what does it mean?