Hi...my baby (4 months old) has been having red strings in her poop for awhile now....at first I thought that it was just blood from me, as my nipples have been bleeding, this was making her poop darker in color. But now her poop is back to the yellowish color, and she still has the red strings....she is only breastfed, and I don t eat dairy or gluten. She has been given a few bites of banana, but that is her only solid food experience. Any ideas?