Hi Dear.
First of Congratulations..so you really fight well and won from this covid.may I know what's your HRCT score.? And don't worry it's very common things in some post covid patients they can face such kind of pain and discomfort..
Next Steps
I ll suggest you don't worry..just keep regular doing Chest excercise..Hopefully you ll be okay very soon.
Health Tips
Deep breathing. use Spirometry.and steam inhalation.