I don't even closely hold myself to be an expert in your situation, however I thought since your in a hurry, I'd respond.

This could be a strong detox reaction. If it is, doing a salt flush may help. This involves drinking water mixed with quality, unrefined salt. Sea Salt is a popular choice. If your still nauseous you may want to sip that water.

Also, DON'T TAKE ANY MORE Iodine OR Iodide UNTIL THINGS SETTLE DOWN.

My best guess is that you shouldn't panic. After cannabis, iodine/iodide seems to have the widest safely margin I've found for any substance (except water).

When your stomach settles down, you might want to try some vitamin C.

you didnt take nearly enough. 40 drops of the 2% is the minimum. you dont have to be too accurate so figure out how many drops are in a dropper full and just squirt three or four droppers full into your water and drink. 100mg is the minimum.

you have experienced the worst you could of detox. it wouldnt have happened if you had taken enough to begin with.

If the Iodine is making you that sick, then you are probably very toxic with the stuff that it clears out, and you need to start with a very low dose and slowly increase until you can take the recommended dose. Then stay on it for a while. You will feel amazing if you do this.