I had a dry socket from a tooth extraction that left a hole in my jaw which opened directly into my sinus cavity. the pain was absolutely out of this world.
I got some Colloidal Silver and began swishing it in my mouth constantly throughout the day. That saved my life!
You don't even have to swallow the silver. Just put some in your mouth and swish it around the infected area. The longer it stays in contact with that area, the better. hopefully you can find the money to get it soon. Do you know anybody in your area who makes it? Perhaps you could arrange a trade? Put an ad on craigslist or something. Just a thought.