You should place a fraud alert on your credit reports immediately. Here is the contact info for the three major credit bureaus:
You should also get copies of your credit reports to see what whoever has your social has been applying for in your name. You can do so for free at www.annualcreditreport.com
Also file a report with the police in the city where the identity theft took place.
If you help cleaning up your credit, call Lexington Law Firm at 1-800-641-2930 and ask to speak with Kristie.