day 7 and feeling weak

I am on Day 7 and woke up feeling weaker than ever. I felt so good the night before too. I have to go to work soon and I worry about blacking out or something. If I continue to feel this way I will have to get off of it. I haven't read the book, but I am wondering what is happening to my body at this stage. Does anyone know? I hate to quit at this far in the game :( Tweet