Feeling sorry for myself

Why is it that as soon as you get some time off work, your body decides to pack up on you? I've got a stinking cold and am feeling miserable- not so much because I feel rotten, but more so because it's made me waste a day of my annual leave doing absolutely nothing. Grrrr, I am not impressed. Did eat some chocolate which cheered me up somewhat but now I feel sick too. I am determined to feel better tomorrow, I WILL NOT BE ILL....and, no, it is not swine flu.