The baby who nibbles only, or has the drinking type of suckle for a short period of time only, is probably not. This is the best way of knowing the baby is getting enough. This type of suckling can be seen on the very first day of life, though it is not as obvious as later when the mother has lots of milk. Baby's bowel movements. For the first few days after delivery, the baby passes meconium, a dark green, almost black substance.
Meconium accumulates in the baby's gut during pregnancy.
Meconium is passed during the first few days, and by the 3rd day, the bowel movements start becoming lighter, as more breastmilk is taken. Usually by the fifth day, the bowel movements have taken on the appearance of the normal breastmilk stool. The normal breastmilk stool is pasty to watery, mustard colored, and usually has little odor. However, bowel movements may vary considerably from this description. The variation in color does not mean something is wrong.