hi i have had this myself ino its hard to say dont worry but try not to go to your doctors and see what they say they might take blood test and if they come back ok and your pain still hasnt gone ask your doctor make an appoinment to go an get a scan its called a cat scan and they will let you know within a week.
Sounds like it could be sinus related. That is exactly where one of your sinus cavities are located. You should take IB prophen to help with the pain and inflammation. You could try an allergy medication but I would check with a doctor to make sure it's not an infection. Are you running fever?
go to the doctor it could be serious.