My son is 10 months, breastfed and eating solids. He poops every day, but it is quite firm. It was always very squishy before he started eating solids regularly. It changes color depending on what he eats, but this morning it was VERY dark. I'm freaking myself out thinking it was black, but it might've just been dark brown/green. This is our first child and I have no idea what's normal and what isn't. I'm going to keep an eye on it and see if it's still as dark next time he goes, but I'm just not sure when to be concerned that he may be constipated/having a stomach problem.