Well, if you have a tumor then I have a tumor too...my left temple and left eye have been hurting for a year or so. I also have strange headaches called ocular or silent migraines, and I have had TMJ for like 15 years now...diagnosed by a dentist.
If it is in fact something caused by your TMJ, antibiotics won't help it one bit. I was just checking on this kind of temple pain this morning and I found several sites that suggest the muscles in your face and neck have a lot to do with headaches and facial pain. If you're overly stressed or anxious every muscle in your body tenses up, including those in you face.
I have an appointment with my doctor tomorrow to discuss this very thing, I'll let you know what she says.