No, you should definitely go through your attorney’s office. Do not accept a check. You could be waiving certain rights, and signing releases of important damages that you are entitled to recover by endorsing that check. It’s important that you have someone who is going to review your documents for you, and not accept immediate payment just because you’re looking to get your check asap. Allow the attorney to make sure that your rights are protected, and that you are not giving up any money or obligations that the other driver may have towards you by accepting that check immediately.