Re: Confused about changes in EBF poop color.
Poop color and consistency does change over time, and there is a wide spectrum of normal poop colors in breastfed babies. In a generally happy, healthy baby who is growing well, green poop can be considered a normal variation, and there is generally no need to be concerned about allergies, hindmilk, infection, etc.
It's really, really difficult to say with certainty what is causing a particular baby's green poop. There are a lot of variables you have to eliminate in order to figure out the puzzle!
When a baby's poop is consistently green, the most likely explanation is that the mom has or had a milk oversupply. The fact that your baby sometimes chokes when he's nursing does suggest that you may have some oversupply going on, but the fact that your baby wants both breasts at a feeding and gets fussy when milk flow slows down suggests that if you do have an oversupply, it's probably not a large one. If you have oversupply, the cause of the green poops is not "not enough hindmilk" but rather too much lactose. "Foremilk"- i.e. the milk that comes out of the breast when it is quite full of milk- is relatively lower in fat and higher in lactose than the "hindmilk" which comes out when the breast is empty. This extra lactose can cause some intestinal irritation which causes green poops. But this is not a health problem- just a minor fluctuation and nothing to be concerned about when the baby is otherwise healthy and growing.
The second most likely explanation, IMO, is some transient infection. For example, a minor cold can cause a baby to have green poops. The baby might not even appear to be sick. If the green poop passes within a short time- say a few weeks- it was probably some sort of bug.
Third down the list is allergies/intolerances to foods that mom is eating. The most likely culprits are dairy, and to a lesser extent wheat and soy. But there are lots of other possibilities- eggs, nuts, shellfish, fruits, vegetables, etc. It could even be an environmental allergen like pollen or cat dander... It's really hard to eliminate the allergy possibility! If the green poops is really distressing to you, you could try cutting down on your dairy consumption and seeing if that made a difference. But the dietary elimination road is a difficult one, and it's one I would travel only if your baby has significant evidence of allergy or is not generally happy, healthy, or devloping normally.
When it comes to switching breasts, it sounds like you are doing things just right- allowing your baby to finish the first breast at his own pace and switching him to the other side when he is fussing.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"