Dr. Szmuc shares how delivery dates are determined and discusses the accuracy of these dates. He also explains when parents can learn the sex of their baby.
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How Accurate Delivery Dates Are The delivery date is determined first off by going through your last period. If you remember it, that would be great. Going through how often you see your cycles before you started missing your periods. In addition, we would get an ultrasound typically early in pregnancy, that can help pin down the due date. Putting those two issues together we can determine an accurate due date. Now a due date doesn’t mean a delivery date, it’s a date that we give you so we can plan any testing and you can plan your life around. Ninety percent of women deliver between one week before and one week after that due date that we give you. An ultrasound done about 18 weeks along in pregnancy typically will see the genitalia of the baby, so 18 weeks is a great time to do that.