Hello ma’am,
Actually based on your symptoms, this appears to be chronic issue and need to find the underlying cause for your symptoms .
Even the allergy panel doesn’t show triggers,an in-person consultation is needed to examine nose to identify/confirm the probable cause.
For now, try to avoid direct cold air, keep your bedding clean, and reduce dust exposure but you still need proper evaluation and treatment
Next Steps
Consultation with ENT Specialist
Health Tips
Steam inhalation or saline nasal drops may give short-term symptomatic relief for blocked nose