Welcome to HCM.
Nasal block could be due to allergic sinusitis
, nasal polyps, deviated nasal septum
Since there are many causes for nasal obstruction
, opinion cannot be given with certainty without proper examination and tests.
Consult an E.N.T. surgeon right away and let him examine you thoroughly to find out the cause of nasal block.
Wish you all the best.
Dr. P. Mahesh