My ex filed false police reports on me. What can I do?

I ended I long term relationship with my ex, who's the mother my child. After leaving her I tried to remain in contact with her for the sake of our son. She continued to provoke argument's and ended up called the police and making false reports. I have people that will support my story with the day in question but at this point I'm not sure what to do. In addition to the above complaint she recently filed for a restraining order due a phone conversation we had about related topics. There seems to be no help from all that I've spoken too. If you can, please help. I'm in Massachusetts.