Oh I remember it well, I had that too early on in my pregnancy. I can't remember how long it lasted for, but I was putting on woolly socks and sat with a blanket in the evenings. I'm now 38 weeks and have been keeping warm for several weeks.
I'm a week ahead of you but I'm exactly the same. I tend to get quite cold anyway but I've had my winter coat on all evening as I was so chilly! I thought your body temperature was supposed to increase during pregnancy but mine seems to have done the opposite.