Mine changed from 19 March (lmp) to 28 March (scan) we were trying and tracking my cycles so know when I ovulated. According to the second due date I conceived the day before my period was due - 5 July and got a positive urine test on the 16 July. So didnt make sense for me really but docs and midwife said until about 12wks foetuses multiply/grow at the same rate for everybody unless something is wrong and thats how they can tell how far along u are. I think my babys gonna come mid March though anyway lol
First due date is normally by lmc. The next due date is estimate from size of baby. Mine changed 4 times. Due datea r just eatimates bc every mom and baby grow different
probably sometime in December
Same thing happened to me my original due date was June 22nd then they changed it to June 12th never told me why though
Thats a pretty big difference! Did they say why?