"I'm not sure how to describe it, ever had something close to your throat and it made you uncomfortable, almost like a tightness in your throat? That's how it feels. I'm also getting anxiety,"
That is goiter your thyroid is swelling a symptom from both hypo and hyperthyroidism because of to much iodine
i would advice you to rešd this blog post from someone , taking large doses of Iodine can make you hypo and hyper , temporary relief is not a cure . I was hyperthyroid all my life and thoughti was cured by low carb diet only to become severe hypotyroid after 6 months