For 41 years, federal law has banned pregnancy discrimination in the workplace.
Prompted by presidential candidate Elizabeth Warren's claim that she was forced out of a teaching job in 1971 because she was pregnant, scores of women have shared similar experiences on social media.
Police officers, academics, fast food workers, lawyers, flight attendants, administrative assistants and others say they hid pregnancies on the job or during interviews, faced demeaning comments and were demoted or even fired after revealing a pregnancy.