Stomach Bug

I usually eat a ton but today I have felt so sick and like I have the stomach bug or the flu. I’m 30 weeks so I keep track of kicks and movements and our little baby hasn’t moved as much tonight as she was this morning, should I be worried or do you think it’s because I’ve been in bed all day? I’ve tried to keep up with my fluids and I ate some yogurt and some other stuff throughout the day, I just feel so sick.