Quote:
Originally Posted by suebry05
first congrats!!! I must of missed another thread with the announcement?? if there was one
secondly - I would not worry about Sonics size just yet- 6 weeks is early on and babys will gain at different rates anyway.... now just eat normally and keep up with exercising and all will go smoothly...
|
Yea there was a little announcement but not in the pregnancy thread, I just asked if anyone remembered me. My dates sound more right on, as the heartbeat is at 158 and that is more of a 8 week pregnancy. At 6 weeks heart beat is around 90 and gains about 3.3 beats per day thereafter until week 9. Here it is...
How accurate is the due date with an ultrasound?
Not as accurate as you may think! It depends on at what point during the pregnancy the ultrasound is taken.
5 - 7 weeks: Measurement of the sac at five to seven weeks gives an accuracy of plus or minus ten days.
7 - 14 weeks: Measuring the crown-rump length gives an accuracy of plus or minus three days at seven weeks
14 - 26 weeks: the measurement of the biparietal diameter of the baby's head, the femur length, and the head and abdominal circumference is used; the accuracy is plus or minus seven to ten days.
26 - 40 weeks: Later in pregnancy, the accuracy declines, and may be plus or minus twenty-one days.