my son is 6 and 1/2 months and I thought he was ready to start solids, but I noticed when he would eat them he would not go poop for sometimes three days after and I was just giving him 1/4 cup of food. We only tried some organic pumpkin and apple.and when he went it was formed poop not mushy like baby poop,like he was constpated a little.So stopped food and he seems to be satisfied with just nursing,so he must have just been going through a growth spurt. Told this to doctor and told her I was just back to straight nursing again, she says he is a little constipated cause he is not getting enough iron from my milk and that I should keep up the food the constipation from the food is due to the lack of iron? Is this true, it doesn't sound right. I usually half to give him 1oz of pear juice with 2oz of water to get him to go again when he gets constipated.