thanks for your query
History seems that you have right nasal mass that needs to be evaluated.
I like to know your age because nasal masses are specific to certain age group, but its ok.Consult ENT specialist
and ask him to do Diagnostic nasal endoscopy
(DNE) and if in that any mass found go for CT scan of nose and paranasal sinuses
for its extension.
If DNE is not conclusive then dont worry just take any nasal decongestant like Otrivin
or Orinase nasal drop twice a day.
Thank you very much