Greetings. From your history, its likely to be associated nasal allergy. Further history like
1. Runny nose
2. Nasal block getting better for a few hours and coming back
3. Phlegm coming to the throat, etc.
Will help to properly diagnose.
Next Steps
consult online/direct if possible for proper evaluation and management.
Health Tips
avoid chilled food items. avoid damp/wet surroundings. avoid allergy triggers.