Ok that is reassuring. Does your chest pressure feel like someone has a foot on the centre of your chest and you have trouble drawing a breath? I am wondering if it is a magnesium deficiency. I am taking all the suggested accompaniments but I have always been magnesium deficient so perhaps I really need to saturate with this first as maybe the Iodine is making the mag deficiency worse. I went to the doctors again today and she is testing my hormones and thyroid again so waiting for those results. Did you also get hot flushes and sweats at all?