Should a bruised shoulder affect my collar bone at all?

A man ran a red light and hit me two days ago. My arm was hurting from slamming into the door so I went to the emergency room. At the time my collar bone wasn't hurting at all, so the doctor just diagnosed bruising on my shoulder. I haven't been back to the doctor, but my whole shoulder (collar bone included) is completely swollen and my clavicle keeps making a popping sound. Is this normal or should I go back to the doctor?