Sorry for the late reply and inconvenience.
Thanks for all this additional information.
I understand your concern.
And it’s my first privilege to pay attention and provide you with suggestions to relieve your discomfort/ worry.
Well as you describe, it sounds like Sinusitis.
You should take some self-care measures until you see your doctor.
Do steam inhalation and saline gargles.
You should take the nasal saline spray.
You should take Ibuprofen and Night Nurse./Claritin.
You should hydrate yourself with warm liquids.
You should start a multivitamin supplement and vitamin C lozenges.
Continue cough syrup.
Elevate your head while lying down.
If your symptoms will persist then see your doctor for further evaluation and management.
Hope I have been able to clarify the situation for you and helped in resolving your query.
Let me know if you have any further queries so we can discuss it thoroughly in every aspect.
It’s my pleasure to continue this conversation until you satisfy.
Waiting for your response.