Fetal movement? need advice please..?

Quick question, I'm 22 weeks pregnant and for the past few days I have been feeling movement quite often, but today for the first time I have felt maybe one kick all day? Its quite worrying? Is there any reason why I should be worried? I've tried the whole cold orange juice, water, sugary foods, walking a little, but nothing. No movement whatsoever, any chance she might just be stubborn and just doesn't wanna move today? Thanks in advance :)