hang in the there! I'm kinda a newbie here and I'm sure some of the more experienced posters will reply soon.
Having a kidney infection, I'm really not sure what to say. Sounds like the Antibiotics aren't helping. Well, they never really do in the long run only cause other issues.
I would say lots and lots of water. Normally, lots of C along with salt pushes, but I'm not sure if the kidneys are stressed.
How many mgs iodine? 8-10 drops Lugol's, I believe equates to about 50mgs. Is this what you're taking?
God bless and hang in there. I'm sure others will be responding soon.