I have had a headache for a month now. Mostly a sharp pain in my left temple with pressure around my left eye. The only thing that relieves it is Tylenol Sinus and Allergy. I have seen my doctor and she gave me an antibiotic. I have been taken it for over a week and it seems to have slowed it down a little but I don't think it is working. She has also ordered a MRI. Has anyone ever experienced this sort of thing before? I'm a little worried that it might be something serious.