I get the swelling too if I am immobilized for too long a period. I am definitely a "textbook" case (ha...like there is such a thing) when it comes to the move it or lost it thing. I am definitely much worse if I don't spend a lot of time moving around. Even when I sit and "rest"...I have to keep my hands and feet moving periodically to prevent a flare up.

Take care and I hope you feel better soon.