Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain 
post nasal drip, snoring and swelling over cheek bones and congestion seems to be due to 
sinus infection or 
sinusitis which seems to be due to bacterial infection..
The plugged feeling in ear seems to be due to 
ear infection secondary to sinusitis causing post nasal drip..
I would suggest you to consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like PNS View of sinuses can help in confirmation and treatment can be planned accordingly..
For sinusitis he can advise you to take antibiotics like Augmentin, anti-inflammatory painkiller like Ibuprofen, decongestant like 
Phenylephrine, mucolytics like Ambroxol, saline nasal sprays, steam inhalations an steroid nasal sprays..
Use a humidifier in your room..
Do warm compresses at the swollen areas and sip plenty of warm fluids..
You can put antibiotic ear drops..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.