I am just wondering how accurate an ultrasound really is? I got an ultrasound done at 20 weeks and my due date going by what i thought was my last period was january 19, but then after measurements from my ultrasound they moved my due date to January 26 is there anyway an ultrasound could be 4 to 6 weeks ahead?
2006-09-28 02:24:04 · 11 answers · asked by sandy 1 in Pregnancy & Parenting ➔ Pregnancy
The margin of error at 20 weeks is 20 days at the most. 10 days before the date they gave you and 10 days after. That is it.
2006-09-28 16:05:03 · answer #1 · answered by Rachel☺ 5 · 0⤊ 0⤋
According to my ultrasound tech, the farther along you go in pregnancy, the less accurately they can determine the due date because every baby (just like every kid) grows a little differently. What she told me is that after 20 or so weeks, the baby could measure + or - up to 14 days from your calculated due date, and everything could still be normal. Besides, your baby is considered full term something like 2 weeks before to 2 weeks after your due date, so really the whole due date thing is more an approximation than a strict deadline. Congratulations and best wishes!
2006-09-28 02:37:31 · answer #2 · answered by p.helen 2 · 0⤊ 0⤋
Due dates are all a shell game. Don't really mean anything in the end. Just another way to cause panic among expectant mothers. Measurements are about the same thing. Fact is, every woman doesn't ovulate on the 14th day, nor does conception always happen exactly on the day of ovulation. If your expected due date, according to your calculations is Jan 19, then don't sweat any of their b.s.
Babies come when they are ready.
2006-09-28 02:30:31 · answer #3 · answered by auld mom 4 · 0⤊ 0⤋
They are not all that accurate. Doctors always give
themselves 2-3 weeks leeway when guessing the birthdate. Since you don't know the exact date you concieved then just figure around the the 2nd to 3rd
week in January. Congratulations!
2006-09-28 02:36:45 · answer #4 · answered by Precious Gem 7 · 0⤊ 0⤋
An ultrasound is as close as anyone is going to be. I guess nobody really knows for sure except your little one inside you! Your due date is just a round about time. My first due date was May 21st. Then they changed it to May 17th and I had my baby on May 26th. So they were "close but no cigar" and Delaney (my daughter) came when she was ready. Good luck and dont worry about the small things. :)
2006-09-28 02:41:11 · answer #5 · answered by laneylewzmom 2 · 0⤊ 0⤋
The u/s date is based on the size and development of the baby.
It's not necessarily ahead. Babies develop differently. I had that happen to me 2 out of 3 times. The doc will go by the u/s date, but the baby will come when it's ready, regardless of what the date is.
2006-09-28 02:39:16 · answer #6 · answered by Jessie P 6 · 0⤊ 0⤋
I doubt it. They usually focus on the size and measurements of the baby's head and heart. They pushed you back a week as far as delivery, which is normal. Fact is, the baby will come when it wants to anyway. My due date was July 25 and my child came May 5!
2006-09-28 02:37:04 · answer #7 · answered by O.K.Q.T. 3 · 0⤊ 0⤋
They're not always accurate. I was 38 weeks pregnant with my second son and I had an US on a Friday. They told me he was just over 7 lb. He was born THE NEXT DAY and weighed 8 lb. 11 oz.
2006-09-28 03:52:22 · answer #8 · answered by brevejunkie 7 · 0⤊ 0⤋
They are accurate about 90% of the time.
2006-09-28 02:30:48 · answer #9 · answered by Anonymous · 1⤊ 0⤋
an ultrasound is a tool, and is as accurate as the person interpreting it.
2006-09-28 02:26:04 · answer #10 · answered by tampico 6 · 1⤊ 0⤋