thanks for using health care magic.
Given the duration of your symptoms, it is more likely that you are suffering from an allergic upper respiratory affection. It is common in predisposed individuals who have a family history of asthma
, atopic dermatitis
, recurrent sneezing
and nasal congestion
etc. It could be seasonal for people allergic to pollens, after sweeping the house for people allergic to fungus etc.
The main arm of management is the identification and abstention from the allergens. Drugs such as antihistaminic drugs and corticosteroids
which your doctor can prescribe will do you good.
Best regards and hope this helps you.