LA County Child Support has a FAQ page : http://cssd.lacounty.gov/faq.htm#esc7
Application for a Child Support case :http://cssd.lacounty.gov/forms/css2101.pdf
California’s Child Support Information Page :http://www.childsup.ca.gov/
Random thought to chew on : even if it is determined that you are not the father, CA Courts can force you to continue to pay child support if it is in the “Best Interest” of the child.
You do not have to have Paternity established in order to apply for CalWORKS, but CalWORKS will ask you to assign your child support rights to them as a way to have your Cash Aid repaid. If you have been in Domestic Violence and this will place you in danger TELL someone when the process is starting.