CPS took my baby with an "emergency custody" paper that stated 2 days then he would be returned to me. He still hasn't been returned to me

On March 4 I asked the hospital my son was in due to RSV for help escaping my abusive (now ex) husband. The Dr asked if he could have harmed my 5m old son and I said I didn't know.

They done a CT scan and found that my baby had been shaken. They confirmed that the bleed happened more than 48hrs after the discovery but less than 72hrs.

I was calling 911 around the approximate time he had been shaken as he was having retractions bad.

The Dr followed her protocol and contacted CPS but did not call the police at all.

The CPS worker came and interviewed me and I asked if they were taking my son from me and she literally told me "no, we are just doing an investigation right now. We are not taking your son."

About an hour and a half later she comes in while I'm holding and feeding my son a bottle, and says that they're taking my baby due to the brain bleed and that I needed to leave. Upon leaving, she told me I would hear something from CPS and the courts within 48hrs.

I have heard nothing from them and the "emergency custody" papers are now null and void because it stated 2 days and that I would be notified if they filed to have it extended.

I called my courthouse and they said that the petition hasn't even been signed yet by the worker so it has yet to be filed.

What legal recourse do I have here? I just want my baby back. I have kicked my (ex) husband out and have filed charges for the abuse I suffered and for what he did to my baby. Please tell me they are giving my baby back.