It definately sounds like an infection and its probably not going to get better until you do get some antibiotics. If you are not allergic to it, amoxicillin and the other penicillin type drugs are very inexpensive and if you need antibiotics you could specifically ask for one of those. It sounds like it could be strep even though you don't have other symptoms so I wouldn't play around with it.

Hope you feel better soon.

Nancy