The body is an incredible piece of "machinery" It is resilient and it's a fighter. All you need to keep in mind is that you know that you are doing your body good. I did a short fast and looking forward to doing it again for longer. The whole time I fasted I did not weigh myslef once. I wanted to keep the real goal of the fast in perspective which is to clean/detoxify and you are doing an amazing job of it. I feel a healthy "envy" towards your resolve. You are doing it right. Keep going until YOU feel you are ready to stop until then... stay strong!