You've been on antibiotics for two weeks ... are you posting up because the condition isn't any better?
I do have natural treatments for UTIs that actually work pretty well, but you have to catch it early on, once it gets entrenched, especially if you've started conventional treatment, you're pretty much stuck with conventional treatment.
I keep cranberry extract capsules on hand, take 'em once a week as a matter of course, and always take 'em after sex ... I keep goldenseal herb on hand too, at any hint of irritation "down there" I start taking them at 3 capsules four times a day. Ever since I've followed that protocol I haven't had a UTI (or yeast infections, for that matter).