At only three weeks post injury, you need to just let go and let time heal. You could be in the 85% who heal spontaneously in the first 6 weeks. You really need to learn to deal with your anxiety. A job as an RN will eat you alive if you can't learn to compartmentalize thoughts.

There are enough doctors who try to say we have somatoform disorder than we need to not set the stage for that diagnosis.

The haziness or foggy brain is often a result of anxiety. Sounds like you may be your own worse enemy.