Due date and how it works

[lelrx]

So I found out I was pregnant a number of weeks ago and Im pretty sure I conceived on the 10th Sept, my last period was on the 29th august
Now as far as I have read you go from the first day of your last period so that makes me 6+4
When I have my first scan will that mean when they work out my due date it will change from what I think it is, I'm really confused as to how it works
TIA x

It might change, but equally might not!

My first was moved to 5 or so days later, this one stayed exactly the same. I know somebody who was moved a week earlier too.

It might change, yes. It all depends on when you conceived but also when the egg implanted.

I know the date that I conceived (only had sex once that week!) but when I went for my scan I was moved forward a day. The woman said I’d probably implanted earlier than average, which skews the LMP guesstimate.

Of course, it might not change at all! You could be bang on :) either way, it shouldn’t change by much if you know your dates x