So I started the Atkins diet three days ago. I started at 130 and I'm now 124. However, I can't seem to notice a difference in my face, legs, belly, etc. I've also been drinking a ton of water, about 8+ cups a day. I did however donate blood to the Red Cross on Day 2. Yes, I know, how stupid can I be but in my defense I had scheduled it while back and didn't want to break my commitment. My nose is a bit stuffy so I don't notice any change in the way my pee smells. Back the main question: how do I know it's water weight that I'm losing and not fat? Thanks!