Scared - low iodine serum levels and goiter. Iodine making it worse - help please!

Hello all, I'm glad I found this forum because I've been freaking out and could really use some advice!

I've been fighting a goiter for the last 2 years. My levels have always been within range. I had high RT3 last year but got it under control with an adrenal supplement and felt great.
Then all of a sudden I started having issues again.
My RT3 and thyroid levels are still normal. I tested negative for Hashi antibodies.

I have been taking Selenium and Zinc and all B vitamins for the last year as well.

I finally asked for an Iodine blood test and my serum results were low at 46 mcg/L. Normal range is 52 - 109.

I was very excited to find the issue and bought some Potassium Iodide drops. I started myself out on a low dose .225 mcg 2 days ago. I have more energy and no brain frog which is nice, but my thyroid feels so inflamed.

I feel like I have food stuck in my throat, it's hard to swallow. I also experienced a severe panic attack last night. Shakes, diarrhea, anxiety.

Is this normal detox/die off? Should I stop the iodine? I am so confused because I know it's needed.
I also had to stop taking my Lithium because of this and it's been making the whole situation even harder on my mental state.

Any advice would be greatly appreciated, this has been extremely hard and I am very scared of every next second and what it will bring. Tweet