Was this clearly job discrimination. (I'm pregnant)?

many states and many medical practices do require the test to be done. it is possible that the particular agency you are seeking employment at just are truely unaware of what your state laws are. give them another day, call them and ask whats going on. if they try to tell you that it is required or any other crap like that, let them know the info that you've been told and by who, and then tell them you will be talking to an attorney about it. then hire one.