Hey Kathryn...how many days diff was your edd form O and from you lmp? Cause If they say to go by my lmp my edd changes quite a bit (from the 19th of March to the 11th of march). I also read that counting 266 days from conception is the most acurate way of calculating due date.
Oh well my 1st u/s will clear up any confusion. I am actually going to use my long cycles as an excuse for an u/s... O can't help myself... I WANA SEE MY BABY!!! LOL

Tanya