Hi! I have just posted a similar problem. In the past i triade the atkins with great success, but i was not yet mum at that time.
Now I've started the atkins again, about 3 weeks ago, i am still nursing but drastically reduced due to retur to work. some day nursing is just a 5 minutes matter since my 14 mo' boy is not attracted by it that much. Yet in spite of a very rigid atkins diet, my stick does not get to pink or violet...only one day i miracoulosly got a ++! and my weight is steadly stopper at 72.Kg
Your theory can be a valid exPlaination really.. Maybe the Milk my baby doesn't take, is reabsorbed and the sugars within as well.
Does it mean that whilst nursing i can't do this diet ??!