Nude cam girls skype name - Accurate dating scans conception date

Your baby is just as likely to arrive 10 days before or 10 days after its EDD.Full term is usually anywhere between 38 and 42 weeks.

Hi I need to know how acurate 3 dating scans are as a measure of paternity. Estimating your date of conception is only really possible for women who have a 28 day menstrual cycle.

I know I need to do a dna test but all three scans perfromed at 12, 16 and 20 weeks have provided the same due date and therefore the same conception date and I was with the suppossed father that day. By convention, the computer programs that are used to calculate your due date are working from an assumption that a woman has a 28 day cycle, and that conception took place exactly 2 weeks after your last period.

No matter how long or short the cycle, you will get your next period around 12 to 14 days later.

Ultrasound has become so helpful that obstetricians now refer to the time before it was used routinely as “the olden days.” We use it to diagnose twins early on; we use it to document appropriate growth as the pregnancy progresses; we use it to determine fetal health; and we use it to guide conversion of breech to vertex (head-first) position and to guide amniocentesis.

Now I must explain that because I knew the exact date of my LMP, the GP said that I did not need an early dating scan and was not offered one.