Woozie - its really dangerous to get too hung up on an EDD as different babies require different amounts of time to cook.
Your 12 weeks U/S is the most accurate way of predicting EDD, but even then, noone can tell you if your baby is a 38 weeker or a 42 weeker.
babies dont need 40 weeks, they need somewhere between 38 and 42 weeks.
Just say early August! LOL, I'm due July 27th, but I'm saying late July early August this time. No dates for me!!!
Fi