Perhaps you are having new found issues because the Iodine is killing off all the bad bacteria, candida and the like you have accumulated. The toxins and die off are stressing your immune system, causing bloat and what have you.
Far too many people simply jump to conclusions when they have a perceived negative impact of supplementation when they dont really even know whats going on.
First step is STOP GUESSING! Get a genova diagnostics GI test and find out exactly what you have in your digestive system and go from there. Until you do that its just peer speculation.