Being really really cold while pregnant?

Dropped by the backdoor of the bar a couple of our friends hang out at to say hi real quick and actually tell them about my condition.. I wouldn't go in because it is smoky.... i was outside talking to them for about five mins... it is 34 feels like 27 degrees here. Anyway... I just had on a light sweatshirt and fleece. I am home and I am warm.. but my womb feels like there is literally a block of ice in it. I am very nervous about this. ANy insight? IT doesn't seem to be fading..