If you are taking immunotherapy which suggests u did have severe allergic symptoms for a long time.
Along with immune therapy start taking antihistaminic whenever u feel allergic spurts.
Ta. Montek FX one tablet at night one hour before sleep for 7 days.
U need to complete the course of full immunotherapy to get better result
Next Steps
consult Nearby ent for proper nose examination
Health Tips
Wear a mask while heading out of the house.
gargles with lukewarm water 5-7 times a day.
start taking steam inhalation 3-4 times a day.
take medication for symptomatic treatment till u consult nearby ENT