If your attorney has withdrawn, you need to hire a new attorney to handle this issue. The new lawyer will have to look at the file, and can help you determine if anything wrong was done, and the appropriate action to take.
Your attorney did not give you prior notice that s/he was withdrawing? You can file a grievance with the State Bar about the attorneys behavior as they are supposed to give you notice and they are required to protect your rights and lawsuits.
In the meantime, you need to hire a lawyer so they can get up-to-speed and protect your rights.