Tobein,
It sounds like you have a rather low body temp - do you know what your regular body temp is? Mine was at 97.4 for many, many years. This past summer I actually warmed up regularly to 97.9 to 98.1!!!!
After having a bit of a family melt-down for Christmas, my body temp is now back down to 96.9 to 97.2.
Be sure to bundle up!! Socks too!! Drink plenty of warm liquids (I love herbal teas). Don't quote me on this, but I'm pretty sure that the low body temps makes for a very wonderful playground for viruses that LD patients frequently as well.