i was given so many due dates for my daughter - two by my last period (one Chinese dr and one Caucasian); 3 different dates by scans and she was born on a different date to all of them. The first date I was given was September 1st and by my first scan at 8 weeks the date was September 19th (other dates were 3rd, 10th, 14th), the first scan is supposed to be the most accurate date but she was born September 7th (went into labour 12:30am on the 6th and she was born just over 38 hours later). The last scan I had at 35 weeks said that she was going to be born the 10th. The only regular periods I have had in my life were 2-3 cycles before she was born that seemed to have some kind of pattern so maybe this was of influence??