I have the same problem. I am actually typing this while in a blanket, socks, hoodie and sweats. I'm always freezing. My doctor told me after all the tests, that sometimes even when you aren't anemic, a little extra iron does help. He also said to stay away from lots of caffiene--which I have to have at least a pot of coffee a day. He mentioned that when I am cold to do stretches before sitting for a while or even before bed. He said I could chalk mine up to having poor circulation. While that sounded serious, it's not, it is common for all types of people. I am 4'11" and all of 118 lbs. I stretch before sitting like I am now, which I didn't do by the way. Try that! Good Luck!