Hi everyone! I know I am going to love this forum already! I look forward to posting here. I am on my 4th day of dieting. Well, I call it dieting. But really I just made a promise with myself that I would walk everyday and drink water. Well my first day, I didn't drink as much water as I needed to, but I walked 2miles. My second day, I drank 100oz of water, walked 2 miles and ate moderately, but I didn't count calories, I probably ate about 1800-2000 though. Yesterday I walked 2 miles again, I drank 100oz of water, maybe a little more, and kept my calories under 2000. Well last night, I started feeling nauseous (is that how u spell it?), and had a little bit of a headache. I still feel that way today! Normally I am used to drinking probably a 2liter of Dr Pepper everyday. I have cut down alot. I drank one can yesterday. Today I haven't had any. I thought maybe that might be why, cuz of the caffeine and all. But I hope someone may know what's going on! Thanks so much!