I thought I would mention this to those with thyroid problems and low body temperature. You might want to goggle Wilson's low body temperature syndrome. (I have the problem also.) He wrote a book about it, has a web site and also has a line of supplements.
On the other subject of "being hot." I do know that being excessively overweight can be linked to that problem and other hormonal problems as well. If you are overweight, that could be something to look into, to help deal with the problem. Also, a lot of the synthetic chemicals in our foods mimic estrogenic reactions in the body. Could be a consideration or influence also. Paula

