My 6 month old grandson is breastfeed and does have bottles of breastmilk, also. Recently he has had green, watery stools. Pretty much diarrhea. The pediatrician said to give it 2 weeks. It s been about that now, and his stools still haven t changed. He has at least 2 or 3 of these a day. Seems to have plenty of wet diapers, though. My daughter said he did have a cold before these started, but that has cleared up. He also had immunizations about 9 days ago, but the green diapers had already started. The breast pumping supplies are washed thoroughly, but not sterilized. The bottles and accessories are run through the dishwasher. Any ideas on why the green diapers?