Hi Jacqui. I am constantly cold, so it's definitely not just you! I've type 1 and have been since I was six years old. Thyroid is normal. No idea if its the diabetes causing it, I can't see how it would though. My partner always goes mad when he sees the gas and electricity bills. Now the temperature has dropped I have the heating on constantly (along with slipper socks and two blankets!). I often lie there shiverring at night. I'll have a big duvet and usually a blanket but I just can't get warm. I was in hospital earlier this year (for something completely unrelated) and the nurse remarked that I always felt cold to touch. One also said my normal temp is lower than many others, although still in the normal range (just). I'm starting to think that maybe I'm just cold hearted!!
Few things that I have found have helped - goose feather duvet (apparently the feathers trap the heat), heated blanket (I sound like I'm 90 years old, don't I?!), big bowl or cup of soup, exercise (seems to help me regulate my temperature a bit better). M&S also do a range of clothing that they claims helps to keep you warm. I forget the name, body warmer or something like that. I bought a few of their tops and they do seem to keep you quite snug.
Em