you're absolutely correct that a drug test will not determine pregnancy, but they could check the urine with a pregnancy test. and guess what? they can and do do that if they want to. And you said don't buy a book because all the information is free? Not all this info is valid. Nor or all the answers someone is looking for here. It amazes me how many people think if they read something online it's absolute truth. HA! Burnt toast stop acting like you're a genius and know everything because you don't.