Glad to hear it went well and you are home. Everything will settle down. Breathlessness is normal and will rapidly improve. Regarding the cough, I was told to do deep breathing followed by a cough every hour. Coughing was very painful and I felt like I had razor blades in my chest.! but I did manage the odd cough and there was a bit of gunk which I assume came from my remaining lung. They said if anything is there cough it up and get it out!
Good luck with your recovery