So a few weeks ago I went in for my first ultrasound thinking I was 8w+3d with a due date of October 18. The ultrasound showed I was measuring 7w+4d so really only 6 days behind. My question is does that change my due date?? I have heard that some docs will still go by the date of your LMP and others say they will go by when you ovulated (I will ask my doc when I see her next what she does) but just curious what others have experienced. Because this weekend I'm either 9 weeks or 10 weeks lol.