At the moment I'd go with your O date, but once your doctor gives you an ultrasound and/or an official EDD, I'd go with that one. It makes life a world easier if you and your doctor are on the same page about your EDD.
The day you first lay in my arms, you made my life complete. Aurora Rose born sleeping at 35w on 4-21-10 BFP#2 {Almond} - 2.1.11 EDD 10.12.11 C/P 2.11.11
Re: Which date to use?
Aurora Rose born sleeping at 35w on 4-21-10
BFP#2 {Almond} - 2.1.11 EDD 10.12.11 C/P 2.11.11