I've had a seperated shoulder, which is basically the same thing. If you tore ligaments, then it should hurt like you're getting pounded by a gorilla on crack, and you'll be in a sling for at least two weeks. Mine still hurts; if you tear ligaments in your shoulder, you'll feel it the rest of your life.
~~~Phunkin' Phatt Crazed Postin' Phreerider Bro!~~~