Let’s face it, once you start showing, you might have a more difficult time finding a job. For that reason, and everything going on with this job, means get out now. Do you really want to be wrapped up in an investigation, have your name tarnished by the mere association with this place if something goes public, have all this job stress, have difficulty finding a job, etc, while pregnant? Yes, FMLA when you have the baby would be nice, but the downsides seem to high. Sorry you are going through this!