Here I would like to add that in this condition you should performed exercises only on the prescription of your physiotherapist. Allow him/her to evaluate you first and then decide an excercise protocol balanced in stretching and strengthening exercises combined with exercised to improve your lung capacity as well. And do not overdo any exercise or perform one that increases any sort of pain.
If it dosent help then you can definately consult the general surgeon
for the same.
Hope it helps
Orthopaedic & Neurological
Lifestyle Medicine Counsellor