I have been following SW religiously for almost three weeks now, and have been really happy at the losses I have achieved so far. For the last two and a half weeks though I have felt nausea and a metallic type taste in my mouth. I am 100% sure I am not pregnant. It may well be a horrid coincidence, a bug of some sort. But I just wanted to see if anybody else has encountered the same? If so, how long does it last? Thanks