I'm COLD!

My house has a definite thermocline. Upstairs it's a reasonable temp. Downstairs I end up under a lap blanket STILL COLD. I think I need a thermometer downstairs to tell me just what the real temp is. Either my heating system is wrong, I'm getting ill, or I'm just REALLY sensitive to the cold lately. I'd really rather it not be the first, we've got enough stuff trying to go wrong around here as it is. The other two, though, don't give me much relief. I've got on multiple layers and am drinking hot tea/cider enough to float. Maybe I'll just go to the mall. There I have THEIR heating system and walking generates a bit more heat. Now if I just had the money to make it worth the trip.