Well I hate to hear of people in pain, but I am glad not to be alone.
I have had this headache for over 6 months now. Started one day when I got sick and will not go a way. The pain is on my left side right under my ear, temple, eye, jaw. At times it feels like stiff muscles, other times it just hurts. I cannot bend over without pain, I cannot have my daughter sit on my chest without pain. Sneezes and coughs are pure agony. Advil is the only thing that will make the pain go away. I have had the same treatments and have been diagnosed as everyone here, sinus, dental, TMJ, etc. It was my dentist though who made the suggestion that has really helped.
She suggested I go to a Chiropractor to look at this. And sure enough it has helped. Some days it is so good I don't need any Advil at all. And it is still getting better. If I go slow, take his suggestions, don't strain, and limit myself to walking or very limited exercise then everything is good. He does think that this will eventually go a way, but that I have to be patience with this and don't over do. I am here looking up advise because I had to move Christmas boxes up stairs and help replace a heavy toilet and my head has been killing me and my patience is gone. But just reading all of this does help. For those out there who are suffering with headaches I really recommend going to see a chiropractor. Just to see if they can help. They are WAY cheaper than an ER or even a doctor visit and they really can help in ways traditional medicine cannot.