You have had problems before, if I remember correctly and had a surgical procedure.
You don't know whether it s vial or bacterial unless you take a specimen and grow the organism. But does it matter?....I don't think it does.
If you feel ill, have a temperature, then you need antibiotics, but if you feel otherwise well, then you don't.
Nasal decongestants are the answer, in any form, sprays or tablets and yes, you are seeing light at the end of the tunnel, probably at the end of this week.......another week.