I thought I would try to give my quest for weight loss a little boost by trying Slimfast bars for breakfast and lunch for a while. I did so the last 3 days and have been having stomach cramps and dizziness. I don't know if this is just a coincidence and maybe my problems are unrelated to Slimfast. Has anyone out there had problems with this product? More specifically, I have been eating the Peanut butter meal replacement bars. I have been feeling out of energy and crappy since I started e...