Okay. I just had my first ultrasound on wed. and they said the baby was measuring at 8 and a half weeks. She said I was now 8 weeks and 3 days. I marked down on the calendar my first day of my last cycle to the day. June 14th. So my midwife originally gave me a due date of March 20th which would have made me 9 weeks 1 day last wed when I got the ultrasound. I know that I could have only conceived on July 1, 2 or 6th. I wrote it on the calendar. Thats all fine and dandy that I am now considered 8 weeks and 3 days as of wed BUT what I dont understand is why did they move my due date to the 28th of march? That would have set me back 8 days and not 5 like they said. Can anyone figure this out????