Change of due date?

I went to the doctor last week thinking I was 6 weeks 5 days based off my LMP (Jan 6th)

When she gave me my ultrasound baby measured exactly 7 weeks. That changed my due date to 10/11 instead of 10/13. I know it’s not much of a difference at all but still, does that mean my new due date is 10/11? & maybe ovulated a couple days earlier?