OT: Is ultrasound or LMP more accurate?
Hi all! I'm just wondering if you've had experience with whether your ultrasound or your last monthly period are more accurate for calculating your due date.
My last monthly period would put me at a due date of July 23rd. My first ultrasound was at the emergency room, and that put me at a due date of July 18th. I had a second ultrasound that also put me at a due date of July 18th. My OB first said that we would go by the July 23rd due date, but then after learning that two ultrasounds both agreed with one another, decided to go with July 18th, with the knowledge that I might be a few days later. Anyone have experience with this, and with what is more accurate? I really want to be sure of my due date!