Hi welcome to Health care magic forum. As it is not congenital and only happened after sinusitis
it should not be a problem, you will recover after the correct treatment.
I advise you to gargle with luke warm salt water daily twice. If possible do water vapour inhalation with some rubifecient like zandubalm, besides your doctors treatment.
I also advise you to follow some diet recommendations as avoid taking icecream, ice water, fruits, juices, and avoid cool weather, and air coolers and conditioners, for complete recovery.
Wishing for a quick recovery and thanks for calling.