"I feel very cold, my toes & fingernails look blue and I'm feeling very foggy. just feeling very bad right now."
IMO, you have the symptoms of severe hypothyroid. I suspect that you have set off Hashimotos by taking iodine without selenium. Spend some quality time to read this: http://tinyurl.com/iodine-hashimotos
When you get your selenium, consider following the doctors advice quoted above to take selenium for 3 weeks before starting your iodine. You might also want to monitor your thyroid antibody levels with the inexpensive at home testing kit, or get help with this from your doctor.
I also suggest you immediately begin charting your body temp to monitor your thyroid metabolism;
Measure Body Temperature - VITAL to manage your thyroid