My daughter had head pain for 24/7 for a over a year. She took a fall at school after a shoulder surgery and her shoulder became infected. To make a long story short, the infection went to her heart and head. After a 2nd shoulder surgery, the head pain began. She was treated at University of Maryland and Johns Hopkins and they recommended going to Michigan Head Pain and Neurological Institute in Ann Arbor, Michigan. She was hospitalized for 2 weeks and came home on daily medication. She also gets 3rd occipital nerve blocks, left and right, about once a year. Her head pain comes from 2 areas. The nerve blocks take care of the pain caused from a whip lash type injury from the fall. The daily meds take care of the other pain. She was diagnosed as New Chronic Daily Persistant Headache Syndrome. We found out that there are a lot of different types of head pain. Many doctors want to group everyone together as migraine, sinus, tension, etc. Something else we found out in Michigan, they call it head pain. They use this term because they feel that a headache can be cured by OTC meds and head pain is a chronic condition. If you say you have a headache, even a migraine, the perception is that you can pop a pill and everything will be ok . Head pain is more difficult to treat.
Before going to Michigan, everything else was ruled out and tried. She went to PT, dentist, opthamologist, had MRI's, spinals, etc. She was even in University of Maryland for a week for treatment.
She is doing well now. She still gets occassional head pain, but she has an abortive medication that takes care of this. However, this med just knocks her out when she takes it. So, I know if she takes it she is in a lot of pain.
Basically, like everyone else has said, have it checked out. If you don't get an answer from the first doctor, keep looking. There is help out there. My daughters neurologist gave her some really good advice, "You must be proactive in your healthcare". This is so true. It took seeing many doctors and fighting the insurance company to get her treatment. She was only 16 when all of this began.
Good luck.