Hello and welcome,
After reading to your query i can suspect you to have acute sinusitis
. It is inflammation of the tissue lining your sinuses
it may have bacterial or viral origin. It does show symptoms of runny and stuffy nose , cold
and flue , nasal bock ,facial pain
ans swelling. It does give pain and pressure like feeling in the gums of your upper teeth . it normally lasts for 10 to 14 days.
If there is infection in the upper gums, deep cleaning of gums and root planing along with a course of antibiotic will relieve the symptoms.
If your x ray
is normal after surgery i suggest you to consult a physician and get it confirmed.
An OPG radiograph will show the complete view of both the maxillary sinuses.nasal floor and the teeth involved so you can get it done. i hope this helps you. take care