My son is 14 months old and since switching to whole milk he went from pooping once everyday or other day, to increasingly more poops. He is now pooping 5-6 times a day. His poop this morning was black, which terrified me since that can be serious, but I think it is a definite indicator that he is having milk issues. He is happy as can be and doesn't act in pain, gassy, or uncomfortable. What were the signs that your baby had a milk allergy? My husband is going to get him an alternative milk on the his way home, what do y'all recommend we try?