I have posted before about our struggles with poop. My 5-month-old has had green poop, sometimes with tiny amounts of blood, off and on for 4 months. I have eliminated so many foods. I will think i have it figured out, get yellow poops back, and then try to add a food back. Green stools return, but it may be a week after trying somthing new. Bad poops are not consistant with a single food. I have thought it was oversupply or overactive milk letdown reflex. I try block feeding for 3 hours at a fime. Nothing seems to work. He has had green stools much more frequently than yellow. He doesn't seem uncomfortable in any way. He is happy and has a little more than doubled his birth weight. He sleeps well. He just has the bad looking poops. Can this damage him? I read that you should see a Dr if green stools last more than a few days. This has gone on for months. We have seen a pediatrician and pediatric GI Dr. They have told me to eliminate foods. I'm off of dairy, wheat, soy, corn, tomato, citrus, egg, peanut, tree nuts, fish, shellfish, pork, chocolate, and caffeine. I even eliminated vitamins for a couple of weeks. I decided to drop the vitamin again today to see if that will help. Any ideas?