We’re glad you asked! First and foremost, it is good for you and your baby! Drinking AT LEAST 100 ounces of water per day creates adequate amniotic fluid and that is how we see babies clearly with 3D/4D ultrasound. The more amniotic fluid you have, the more it pushes the uterine walls and placenta away from your baby which allows us to see your baby clearly! We STRONGLY ENCOURAGE mom to be staying away from any and all caffeine. Caffeine is a diuretic which lowers your amniotic fluid levels and has a negative impact on the clarity of your images. Typically, when mom’s do not drink the recommended water amounts over an extended period of time (typically 2 weeks) and/or are caffeine drinkers, those are the babies we may struggle to see well. The more water you consistently drink over 100 ounces per day and the longer you are doing it, the clearer your ultrasound will be. WE WANT YOU TO HAVE THE CLEAREST IMAGES POSSIBLE, SO PLEASE, START DRINKING WATER NOW and stay away from caffeine! It will pay off for you when you come in to see your baby with us!!