This hasn't happened to me because I'm still nursing my almost 3 year-old, but I've heard of things like this happening to other moms. It can take a long while for your milk to totally dry up.
Are you interested in nursing again? If so, you can certainly go for it! If not, just wait and the milk will dry up. If it takes a really, really, really long time, you might want to talk to your doctor and get your prolactin levels checked.
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!"