Hey bro, for what its worth I wouldn't wait it out. A friend of a friend tried 'waiting it out' once and he wound up having some sort of an allergic reaction to the bacteria in his body. On top of swelling in the face, hands and feet (to the point to where he couldn't see), the doctor had to lance and drain the depot site on his ass, which left a permenant crater about the size of a quarter on his ass. I've seen it and it aint pretty.
Had a similar infection once, the best stuff to use is CIPRO. Super strong antibiotic that whips just about everthing. They gave it to the anthrax patients after 9/11, but my doctor prescribed it to me in case of food poisoning prior to a vacation to Mexico. I used it for a similar infection as what you have once before, 1500mg day one and then 500mg/day for ~3days thereafter. Really kicks the infection in the ass. I make it a point to keep some on hand for just this type of occasion.
Hope this helps dude, good luck and get some Cipro.