This is a weird question, but is it possible that DS could have a sensitivity to my homemade food that he didn't have with commercial food? I think he's having a hard time with my homemade apples, or pears, or sweet potatoes. unfortunately, since he seemed to take them fine when I bought commercial food, I didn't give him one food at a time when I made it I'm not sure which one is the problem. Also, where can I find links to how to tell if his stools look like an allergy? For some reason I can't find them. Any links on reflux and starting solids would be helpful also...since DS does have that. Thanks in advance.