Hi.. If you have such a severe sinus pain then it can be due to severe infection in your sinuses.. Blocked and inflamed sinuses causing sinus pressure can be a cause.. Percocet can help with the pain but along with it getting checked is a must for appropriate treatment. I would suggest you to consult an Emergency room or an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like PNS view x ray can help in diagnosis and treatment can be done accordingly.. You can be advised a course of antibiotics, decongestants like Pseudoephadrine, do saline nasal irrigation, steam inhalation and use a humidifier in your room.. You can also be advised decongestant nasal sprays containing Xylometazoline or Oxymetazoline.. Avoid spicy and chilled foods.. Do warm compresses around nostrils.. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Honey Arora, Dentist