Thanks Elaine, for the additional facts.
Even if the colleague in NY used his knowledge of your pregnancy to press your employer for your job---that does not tend to prove that the employer somehow discriminated against you based on your pregnancy. If you can show how his knowledge of your pregnancy was used---and that the employer based on your pregnancy decided to get rid of you---only then would you have a viable claim for discrimination. While the circumstances are suspicious, that alone is not enough.
Take a look at your agreement. While many agreements hold that you agree not to pursue a claim against the company for discrimination---they don't take away your legal right to file a formal DFEH/EEOC complaint---and you are probably free to file a complaint---you simply won't be able to sue the employer.
The arbitration agreement you may have signed on your hire---agreeing to arbitrate any claims against the employer that you might have---is a common agreement, and in and of itself is not illegal. The arbitration agreement likely speaks to claims of all kinds---and so that would include discrimination claims. As the severance agreement probably prohibits not only lawsuits but claims by you---that would eliminate your ability to make an arbitration claim for discrimination as well.
Now, if you want to file a formal complaint of discrimination with either the EEOC or the DFEH, you may do so.
To do this you must first make an appointment with the Department to be interviewed, either over the phone or at a local DFEH office. You may call the DFEH at 800-884-1684, or apply on line by using the Department’s "Online Appointment System." The system will guide you through questions to determine whether an appointment is right for you.
Alternatively, you may file a complaint with the EEOC (Equal Employment Opportunity Commission). If your company has 15 or more employees (the DFEH only requires that there be 5 or more employees), they are prohibited from discriminating against you. To file a complaint with the EEOC, contact the nearest Equal Employment Opportunity Commission field office. To be automatically connected with the nearest office, call (800) 669-4000. EEOC website: www.eeoc.gov
I wish you the best in your future, Elaine.