I have been experiencing similar things, only not for months. I had a terrific headache and took Augmentin for it, thinking it was a sinus infection. The headache went away, but I still feel pressure around my eyes, eyebrows and cheeks. So, off to my ENT I went where I got probed with a camera via my nose. My doc said that I had a tiny bit of buildup in my sinuses, but there was a lot of swelling, which indicated a potential allergy problem. So she put me on Allegra, Flonase, and something called Bactrim to fight off any potential infection I still have.

And don't feel too bad - I also have anxiety issues and I constantly am worrying that whatever it is I have is something serious. But chances are, it's a sinus problem or an allergy problem. Or maybe both. I don't have a ton of advice, but I just wanted to let you know I'm kinda in the same boat as you are.