I'm sorry to hear that you're not feeling so good.

As for house work motivation. is there any music you like to listen to that just gets you moving? Sometimes it helps me to have music playing loudly while I work. I also just start with a room. It might be the lounge where I just start by tidying away all the newspapers and junkmail, then I end up dusting and vacuuming...

Perhaps some kind of reward for yourself when you finish a room? Read a chapter or 2 of a book, rent a dvd...