Definitely hypo symptoms, but check your body temperature to be sure. Both Trapper and I have gotten rid of our low temperature syndrom / hypo T with iodine, time may be needed, or even higher doses of iodine. I would increase the selenium as suggested, Until the swelling goes down. Pulse dosing Iodine is an option too.
Cold hands and feet; circulation problem, when the body has to preserve health, it consentrate the energy (heat) on the important organs in the middle. Hands, feet, are the first to suffer.
I found drybrushing of skin, all body from bottom to top, very helpful. Also alternating warm / cold showers. Cayenne pepper helped me alot in the beginning, coconut oil, turmeric.