Aspergillus recovery normal?

Hi all hope your all well. Quick question i had a lobectomy two weeks ago for lung aspergillus. My breathing is still off got given nebuliser and using it a lot,breathing worse than before operation and my peak flow is down from 550 to 400. Sats say im 96-99 i know its early days with recovery and ive been trying to walk and i do incentive spirometry repeatidly everyday. Is there anyone out there whos had a similar experience? Many thanks and take care all.