Wow...I was waiting for horrible news and the whole thing sounds like one huge wonderful testament to iodine, the other supplements, and your doing ALL those things to improve your health.
The first thing that came to mind when you mentioned the discharge was thing called "cervical mucous".
Did the fluid have the consistency of egg whites? The fact you said it was clear with no odor told me it may not be detox or something "bad" leaving your body, especially when you said your cycle is not due yet.
Cervical mucous is a necessary germ KILLER and lubricant (for when we are sexually active) and we also have it in more abundance when we ovulate. Ovulation happens about midway between our menstruation cycles! Watch it, you could get pregnant right now! lol
Could well be just another positive. That's my take.