Ours did biggies in her diaper nearly EVERY HOUR for a few weeks. Never mind sleep, trust me, that was tiring! It turned out that she was reacting to her mother's dairy and/or egg intake. We got a prescription for a special hydrolysed protein supplement, which I am told one can live fully on until ten to twelve years of age. It was a life saver, for all of us, and has also been at times more recently, whenever she is ill etc and won't eat, we have managed to keep nutritional value and energy intake up. Today, nearly 2.5 years old, she can eat anything, but that first year of making our own baby food and indeed the general family food, all without dairy, egg, tomato and citrus, taught me more about cooking. Try to whip up a decent sauce without any of those ingredients and you quickly find your options severely limited.