Being pregnant isn't something that can't be mentioned, but if the whole crew knew about it, they might be too polite while filming, which could affect the show's outcome.
Overly accommodating Suzanne would also not be good. Even if she's pregnant, the current audience is very critical, and it could easily cause her to be disliked.
So, considering all aspects, it's indeed better for her pregnancy not to be known by everyone.
Caught by Olivia's sudden glance, Suzanne's action of biting the pear momentarily froze. But explaining more at this moment would seem like covering up. She weighed the pros and cons and decided to hide it, but in Olivia's gaze, she didn't want to lie to her either.
Just as she was about to wink at Olivia, Laura Ford spoke up: "Suzanne, I get motion sickness too. I've heard that eating sour pears can relieve it and also quench thirst. Is it effective? Let me try one."
Suzanne looked up at Laura, who was already smiling and coming over.