Unfortunately, the answer is no. Child support is only retroactive to the date you file your motion to establish support. You can hire an attorney to help you with this, see the family law facilitator (FLF) at your local court, or contact your local Department of Child Support Services (DCSS). DCSS provides services free of charge, but may take a little longer than hiring an attorney or doing it yourself or with the help of the FLF.
In the absence of a court order, your ex wife has no legal obligation to pay you child support. If you pursue a court order at this point, it will be retroactive to the date of filing of that request (aka Request for Order FL-300).
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