I've also discovered this last week that being sick while pregnant ups the uncomfortableness to all new levels!
Not sure if I have a cold or flu, but am working my way through the last of it right now. Got sick last Tuesday and ended up using my remaining sick days/vacation days for the rest of the week last week. It's possible that a lot of this could have to do with the weather changing from 70 degrees to 32 overnight- or possibly the stress of the fact that my husband's best friend and wife will be moving in with us this week b/c he has to be out for back surgery for nine weeks and they can't afford to keep their apartment- or perhaps it's as simple as everyone seems to be sick these days and you just can't avoid the germs. Who knows?
I sure hope you feel better soon!