As long as you, the victim, are having on-going complaints related to the accident, you should be informing your doctor about those complaints.
At the very least, your doctor is going to be making a record in his or her chart about your complaints, and you can present that list of complaints to the opposing insurance company. When the case goes to a juried trial, the jury will hear how long you went to see your doctor and what the complaints were over a period of time.
It is crucial that, as long as you have complaints related to the injuries of your accident, you continue to receive medical care.