Is this part of the healing process, Lung?

I had severe pneumonia about 6 weeks ago and was recently discharged from the hospital. Recently, I've been hearing a bubbling sound in my lungs when I breathe in and out since I stopped taking my asthma inhaler. Could this sound be related to a metallic taste in my mouth, which I've also noticed? I'm wondering if this is related to residual fluid or mucus in my airways, or if it could be a sign of incomplete healing or further inflammation. I've also had chest pain for the past few days. Should I be worried, or is this a normal part of the healing process? When should I see a doctor? Has anyone had a similar experience?