Did your due date change?

MrsW
Hi I'm just wondering if anyone has had their due date change? My first scan put me at 7w2d due 9th June but this seemed really odd & doesn't quiet add up to when I had my FET. The Doc advised that frozen embryos can start off slowly & it's possibly I may measure further along at my next  scan. The online calculators put me about a week further along. Anyone else experienced this? 
I guess not that it matters as long as our lil bub is healthy & keeps growing ?