Decreased movement at almost 20 weeks

On Thursday, my baby was moving around like crazy all day long. Usually she moves the most at night time or when my daughter is laying on top of me (which is all the time lol) but never as much as Thursday. On Friday and Saturday, she has moved very little. I haven’t even felt her move much at her usual times. I’ve eaten sugary foods, messed with my belly, etc and I haven’t felt her much. I’m trying not to be nervous since they say don’t do kick counts before the third trimester (?) but I’m nervous. Should I be? I’m 20 weeks on Monday.