I have been formally diagnosed with Fibromyalgia and possible Carbohydrate Intolerance. My issue is when I eat a load of carbs, it hits up to 3 days later and I can't hardly get out of bed and am weak most of the day. Everything I read about Carb Intolerance says that fatigue usually hits within the first few hours. Has anyone else experienced this? Carb crash, a day or days after the carbs are eaten?