My 11y son hurt his foot yesterday. its very swollen and blue and he cant step on it. i suspect torn ligaments. can i go to directly to the emergency room or first see my dr.?

Depends on details: Fractures are broken bones, and there will be pain when a bone breaks. Different people have differing perceptions of pain, so it's possible for somebody with a very high pain tolerance to say his broken ankle doesn't hurt much. If a sprained ankle is very painful or if not improving daily after the first two days, an exam can help decide whether or not there is a fracture. Can call doctor first.