Well, all would be well adn good if I had a dating scan... but i didn't!!!
My first scan was at 16w. I measured approx 15w, then sacn at 20w measured 18w2d, scan at 22w measured 21w6d and scan last fri at 27w 3d measured 27w2d.
My GP was wuite happy with my Origianl edd of 17th july

I had a m/c on 10th august, bled for 10 days. Then like clockwork, I had my first period 10th september. Then 10th october, and then I tested my self 5th Novemeber, negetive, and tested again 11th november with BFP... and there was no mistaking that Bright line on the HPT.
I have always been told before today, just to stick with my edd. It's just so confusing when the same doc told me at 20w, to go with my edd, and tells me today that I am only 26w???

I am having plenty more scans, so I'll just see what they say after each one.