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