Everyone at school knew you were pregnant, a teacher of DATA, but you had to leave due to it so the whole class was stuck with Umbridge.on half of the fourth year Umbridge had an announcement.

Umbridge: everyone I believe my job here is done.

Everyone seemed confused especially Hermione until Umbridge left the room, after a few minutes you came in with Dumbledore behind you, you seemed to be holding twin boys which left everyone shocked you were back.