What you describe makes me think that you may have a nipple blister. Pain from blisters can be particularly intense during latch-on, can co-occur with a plugged duct or engorgement as milk backs up behind the blister, and blisters often coincide with teething, as the baby alters his latch a bit to soothe his sore gums. When you say your baby wants you to be the human binky, that automatically makes me think that teething is the issue.
ETA: I wouldn't wean, because I doubt it will improve things. Imagine trying to manage a cranky, teething baby without being able to fall back on nursing! If you do decide to wean, definitely don't do it cold turkey. That just sets you up for engorgement and misery.
Last edited by @llli*mommal; February 7th, 2011 at 07:32 PM.
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!"