coz my doc gave 3rd october while ultrasound shows 20th october. Also what is full term gestation wise. isn't it 36weeks? for gestation and 40 weeks from LMP..the one doctor gives. wt happend in ur case.
2006-08-11 03:34:55 · 6 answers · asked by abeer 2 in Pregnancy & Parenting ➔ Pregnancy
Ultrasound is not an exact science and they are quite frequently off. For two of my three pregnancies, the ultrasound measurements were off by about two weeks.
Technically, a baby is full term at 38 weeks, but the "40 week" figure is what was traditionally held years ago and that's what doctors stick with for traditions sake.
The most accurate due date is the one based upon your cycle, that is if you are regular and therefore know within days when conception probably occured. So the EDA (expected date of arrival) is usually a better gauge then the ultrasound.
2006-08-11 04:11:29 · answer #1 · answered by Veritas 7 · 0⤊ 0⤋
A pregnancy is considered full term at 37 weeks. Any week before 37 you are pre-term, anything after 40 is post-term. This is what my peri even said, since I am at risk for pre-term labor, having a daughter at 24 weeks and sitting 100% effaced and 1cm dilated at 32 weeks with my son, having cervical issues that started at 22 weeks. Years ago it was 40 weeks was full term, but lots of people now a days don't get much farther than 37-38.
Was your cycle longer than 28 days? If so your O date is not going to be around CD14 or 15. I had cycles of 33 days long and would O on CD22. I had a due date per the chart at the OB's of October 4th, technically since I O'd later it's really October 9th, but my u/s are showing growth is right on and since we are within a week, the doctor is keeping my date as the 4th. I had an u/s at 6 weeks to date the pregnancy even. I have had u/s every 2 weeks from week 16-32 and all show the baby right on target for whatever week I am.
Baby now at 32 weeks is 4 lbs and about 17 1/2" long.
2006-08-11 03:54:26 · answer #2 · answered by Ericka K 2 · 0⤊ 0⤋
Singles full term....37 weeks
Multiples full term....36 weeks
If your first ultrasound was under the 12 week mark it can be the MOST accurate
IF you know the date of your last period then you can go by that and if your 100% sure then you can use the date you get fromt hat(which usually is the date the doctor uses)
17 days isnt much of a difference
Remeber its normal for a woman to give birth 2 weeks prior to her due date (36-37weeks) or even 2 weeks after(42 weeks)
2006-08-11 04:24:52 · answer #3 · answered by Chocolate Model Intellect 2 · 0⤊ 0⤋
I carried all 3 of my children 42 weeks. My grandchildren have split the ultrasound date & doctor's date. 7 grandchildren -
3 born within day of doctor's date (2 by ceaseran) - & 4 with ultrasound date but 2 were twins and induced at 38 weeks.
Count on sometime between 3rd - 20th. I think 14th.
Twins are full term at 36 weeks but singles are not full term until 40 weeks.
2006-08-11 03:59:14 · answer #4 · answered by Wolfpacker 6 · 0⤊ 0⤋
The original date the doctor gives you! With both of mine the ultrasounds had me nearly 2 months off, but my doctor was spot on. Gave birth to my first within 3 days of the expected due date. Still awaiting the 2nd, but everything is right one.
I had thought it was 39 weeks, but I think its pretty much anywhere in between lol.
Good luck and congrats!
2006-08-11 03:55:29 · answer #5 · answered by saintlyinnocents 3 · 0⤊ 0⤋
The doctor's calculation are based on calculating from the last menses. The ultra sound is based on measurement of fetus. Actually, the baby will come when it is good and ready somewhere in that time frame. I have known a stubborn one to go a week of more past due date.
2006-08-11 03:54:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋