I thought I was the same, after a few 6-week cycles (so 8w by LMP and 6w by my counting), but it turned out that I O'd at just 2w after my LMP on the scans, so I jumped forward quite a bit! Good luck on finding out when your new EDD is, my midwives and sonographers didn't want to hear that my previous cycle was an 8w cycle and thus I could be 5-9w pg on my US scan! They just went with 9w because that was my LMP date. Good luck getting a "real" date!