Hi Dear ,
As per your query you have problem congested nose and popping noise in ear along with dizziness . Well the symptoms you mention in query like dizziness can occur due to many reasons like benign paroxysmal positional vertigo (BPPV) are ear infection
, hypoglycemia , anemia , meniere's disease , migraine , acoustic neuroma
and alteration in he blood circulation . The popping noise occurring due to (ETD) eustachian tube dysfunction
which occur due to entering of saliva from pharynx due to post nasal drip
or upper respiratory track . I would suggest you to consult ENT specialist
for test like throat swab test , CT scan for sinusitis , viral culture test , posturography , rotatory chair and examination with otoscope . Doctor may order antibiotics ( amoxicillin ) , decongestant and expectorant . For now do warm saline gargles and take steam .
Hope your concern has been resolved.
Get Well Soon.
Dr. Harry Maheshwari