Any advice? After sitting cramped on a flight for a few hours my hands and arms stayed feeling numb for a day. This was a couple of weeks ago, and since then my legs feel week on and off, my arms too. For the last few days I've been feeling lightheaded and weak, and very anxious. Today I also feel queasy. I've got so much to do and can't concentrate! Had some blood tests and I'm waiting for results, any advice anyone?