Re: marathon nursing
This will pass. I'm not sure what's causing the excessive fussiness, but whatever it is it isn't a supply issue or a milk transfer issue. If it was, diaper output would indicate a problem, and it doesn't. So whatever is going on, you should feel confident that you have the fundamentals under control.
Based on what you've described, I am thinking that there are 3 possibilities to explain your baby's behavior: either it's normal new baby fussiness with a touch of colic, or it's oversupply, or it's reflux. New baby fussiness/colic would explain frequent feedings, fussiness, and wanting to be physically attached to mom at all times. Oversupply would explain the milk running down the side of baby's face (many babies deal with a fast flow by letting the excess run out of their mouths), would match well with nipple damage (babies can compress and damage the nipple in an attempt to slow the flow) and with laid-back positions being better for you. Reflux would match well with the fussiness and extremely frequent feedings (some babies with reflux nurse non-stop, because constant swallowing helps keep stomach contents down where they belong and because milk helps to neutralize stomach acid).
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!"