The body appears to detox in waves, so it could be the next wave after the first toxins were cleared out of your system with Iodine.
I wouldn't say increase Iodine as I didn't, but do think it will pass if you continue or even discontinue for awhile. At least that's how its happening for me with my symptoms, they come and go. Something is working though, because before Iodine there was no relief of symptoms at all.