Soda before ultrasound

H
Have our ultrasound today 19wks5days I want to make sure our baby is moving so we can get a good look at everything, was wondering if drinking a tiny can of soda (caffeinated or not) would give baby an extra boost? Or does it not matter? Haven't had an ultrasound since week 8, anxious to make sure everything is OK with baby, this will be our first after a miscarriage last may