Oh dear so much conflicting info lol I guess I'll just have to wait and see what the GP says, and then the birth centre. I think they are generally more inclined to use the first scan date, I've always heard the earlier they are the more accurate. Plus, with my sacs (ha that made me giggle) being over a week "bigger" than the baby, I'd say the average is in the middle anyway?

I'm only obsessed with EDD because I had an early baby last time, and a few extra days could be the difference between a birth centre and hospital birth.