Prickly heat

It's about 55 degrees here in Chicago today. I am wearing a cotton sweater, which is entirely reasonable. My office is sweltering. I have my own thermostat and it's set as cool as it can go. I know I am pregnant and not the best gauge of climate control but I do think 80 degrees is too hot for an office. The building can't seem to get it right. I have half a mind to close my door and finish the day out in my underwear. I am getting very grouchy.