try the health food store... there are many natural choices
Have you ever had an allergic reaction to iodine?
Hmm I wonder what it was that made you break out. I can't remember- do those ones have a coating on them? I used to get them there because they were the best price and not close to $30. I now buy mine from costco. It's like $10 for 200 pills and they aren't coated.
I live in England so sorry if I'm not much help, up your whole full fat milk intake, and call your midwife or doctor up and ask them if there's something better you can take, so long as you have a balanced diet and are getting lots of folic acid and calcium there shouldn't be a problem. I take pregnacare but not sure if you have it there. x