lack of movement ?

so i work 9-5:30pm, usually my baby is kicking all day long, and then pretty quiet from the time i get home till around 8-9pm and then pretty active again before i go to bed around 10-11pm. i’ve noticed the past few days she’s been less active or i have to poke her and shake my belly a little to get her to move around. but she also still kicks sometimes on her own just not as often or as much as usual. is this something i should be worried about ? i’m sitting here at my desk and just noticed i haven’t felt her yet. usually her kicks/moves are pretty strong so i feel like i definitely would’ve noticed if she was moving unless it was lighter movements and i just wasn’t paying attention ? i don’t want to stress for no reason and i’m a very big over thinker so i just don’t know what to do. is this considered lack of movement ?