Due date help!?

stephanie

So im 17+4 and originally my due date was 6/9. However every time I go to an appointment my dr will say everything is measuring great and due date is 6/11. I think he may have gotten it mixed up but don’t know how to ask. According to the app and due date calculators since I’m 17+4 my due date should be 6/9??? I know it’s not a big difference I just would like to know the exact due date.

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