Re: New fussiness when breast feeding
Welcome to the forum and congratulations on the new baby!
If you've made it to 6 weeks with such minimal fussing, I think you're doing really well. 6 weeks is often when fussiness and colic peak. Both my girls would cry nonstop for 2-5 hours in the evenings from 6-12 weeks, so just a few periods of fussiness sounds awesome to me! And very normal, and not necessarily a sign of something you are doing or not doing.
Yellow-green poops and pulling off the breast in order to fuss sound like baby may be expressing her dislike of a fast letdown. You might want to try using some reclined nursing positions, since those do no harm and can reduce the flow speed to the baby and result in a more comfortable experience for her. Long feedings are very normal, and as long as a baby is growi at a normal rate and producing adequate wet and poopy diapers, long feedings are nothing to worry about.
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!"