Thanks for replying.
Well I broke down and went to the ER last night. I know people speak of horrors when dealing with the local hospital emergency room but fortunately for me that hasn't been the case. I wish some of these ER docs had their own practice.

Anyways, the doc took one look at me and could immediately tell that I was in need. Told me that I had one of the worst sinus infections he had seen in awhile

and he promptly wrote an Rx for Zithromax.
I know it's been only one day since starting on ABx but I feel ever so much better. My face doesn't feel like it's in a vice anymore.