that depends on the route. if the netorare route activates then the pregnancy counter stops automatically.
there is no new cg for the pregnancy, but after reaching above 500 it triggers an ending after sleeping
there is a glitch for the special office ending. to solve the glitch you can go to the bosses house and sleep at night which will unlock the night office event. there is also boss ending, normal ending which will be achieved after selecting second option in the midnight sex event at office wearing special office clothes.