Employment Law Questions? Ask an Employment Lawyer.
Your option here is to first file a complaint with the Equal Employment Opportunity Commission in your state. That government agency has the power and ability to come in and perform an investigation about the pay differences so that you can have some actual evidence of that pay differential.
It is also legally required to preserve your right to sue through the EEOC process. So, that is where you need to start. It stops the time clock on your claim and gives you the benefit of an investigation.
Filing this complaint is a protected activity, so you cannot legally be retaliated against for filing the complaint.
Once you're through that EEOC process, then you get the report and a "right to sue" letter. It is at that time that you would look at hiring local counsel file a federal complaint.
I see that you recently posted a phone call request which expired.
Did you have follow up questions to ask based on my response to your question? You didn't ask any follow up questions, so I had no basis to give additional information. What is it that you need to know in addition to what has already been provided?