A due date is just an estimated date it is not the actual day you are saposto have your baby, my doctor said when your body is ready the baby will come.,

No it doesn't matter which ultrasound exactly. The dating ultrasound simply is (usually) the first ultrasound. And just as it's common to go over a little it's just as common to come a bit early too. Not many women come on the due date given because the due date is quite simply an estimation worked out by the measurements they take. So you may still come a little early...you never know!

alright thanks guys

all mine have been determined by ultrasound ((because i have always had serious period problems, polyps, fibroids, cin#2 pre cancerous cells so my period has never been a regualr thing, sometimes staying for 3 mths at a time)), but at around 6-8 weeks not 20, as its more accurate the earlier u get 1..

Seaason