Hi..based on your history...your main complaint is unilateral nasal obstruction!! There are many causes for nasal obstruction...chronic obstruction is usually mechanical i.e either due to septal deviation, turbinate enlargement or a nasal mass!!
This nasal obstruction alternating between left and right is usually physiological but it is exacerbated if their is some underlying pathology.. and lastly we should also rule out allergic rhinitis
Next Steps
steam inhalation twice thrice daily will provide some relief from the symptoms!!
Health Tips
detailed history is needed... for further management!! so book a consultation.