What rights do I have if I believe I was the subject of discrimination because of my pregnancy?
The Pregnancy Discrimination Act specifically prohibits this type of discrimination. You should first gather all the evidence you can: memos, notes from meetings and your recall of conversations that may have indicated a promotion was going to come your way and so on. Next, you need to file a charge with the Equal Employment Opportunity Commission. Information on how to do so can be found on the EEOC's website.