Remember, a hero stops being a hero as soon as he considers himself one. The physical pain you are suffering, as well as your emotional distress as a result of the pain is something that the jury / defense attorneys have to infer indirectly from what happened in the injury incident and not simply take your word for it.
This means that treating longer than you reasonable should have to simply increase the amount of medical bills, or having your doctor write a report to grossly exaggerates your symptoms and injuries will likely backfire at a deposition, when it's time for you or your doctor to testify or later - at trial. This means that you should not treat longer than you feel is necessary, and you should not continue seeking the same type of treatment of too long if it proves to be ineffective.