The white spots on xray may just be calcifications. But your lungs appear hyperinflated. Any smoking history? Or exposure to daily pollution? As they can slow down the process of recovery. At present nothing to worry about xray, but a spirometry is needed as you still have SOB
Next Steps
check saturation and do a 6 minute walk test. Walk at normal pace for 6 minutes and check for any drop of saturation of more than 3%
Health Tips
Spirometry is suggested