Have anyone got newly employed but suddenly found out you are pregnant. How do you tell the HR?

this just happened to me too. got advice from my ex boss to share as early as possible to build trust and rapport so I did and they were really understanding and assured me that they still wanted to hire me. apparently once u sign contract they can't take back the offer anw 1) signed contract (apparently can sue them if u really bother) 2) can't discriminate