Due Date accuracy?

Question

I'm 30 weeks along and just wondering if doctors ever change or "move up" due dates towards the end of pregnancy? Or are the original due dates that they give usually pretty accurate?

Answer 1

They can still be wrong by a week or so. They had to induce me three days BEFORE my due date because they figured out my baby was much further along than originally estimated and they told me that's what they had to do at my 39 week appointment, not early on. I think they generally won't change a due date once they set it because they figure it is just an estimate and not a guarantee and they don't won't to make the new mom-to-be anxious by changing things all the time like they don't know what they are doing.

Answer 2

I think most of the time, if they're going to change your due date, it'll be when you have your 20 week ultrasound, and that would be based on if the measurements indicate a younger baby than was expected. This isn't to say the original due date is necessarily accurate, because they have no way of predicting the baby's actual development rate.

My son's u/s looked fine at 20 weeks, but when he was born at 38 weeks, his development was that of a 34 week baby, and was termed premature for that reason. They had no reason to expect that to happen, so they hadn't changed my due date from the u/s measurements.

The only way they would suddenly move up your due date is if there was a sudden medical emergency or if they got impatient about waiting.

Answer 3

When I was 32 weeks I was measuring 36 weeks so my OB odered an ultrasound and according to the ultrasound my date was moved from 3/24 to 3/19...so not much of a change. My OB still went with my LMP dating of 3/24. My daughter was born 3/10(I was induced due to high blood pressure). She weighed 6 lbs 13 oz so I am guessing that the 3/24 date was pretty accurate.

Answer 4

Due dates are just estimates - some are better than others. There are so many factors (regularity of periods, mom's recollection of when last period started, etc) that can affect the due date it is easy to be off - see my personal experiences below:
With my first baby, I delivered her one day after her due date.
With my second, I delivered her 3 weeks early or so we think. I have a hard time believing my due date was accurate because she 7 lbs 15 oz. She was only 1/2 inch smaller and 1 ounce lighter than her full term sister. If she came one day earlier, she would have been considered premature!?!

Answer 5

Usually once you are in your last trimester the due date may vary by days or a week or 2. The due date is pretty accurate and you really could deliver as soon as right around 36-38 weeks and everything would/could be just fine. So, once you reach that 36 week mark you are almost there!! Good Luck and before you know it your bundle of joy will be here!!!

Answer 6

The due dates can change based on the results of an ultrasound. The EDC, or due date, is based on the first day of your last period, but a lot of women are not even sure of the date. Also, that date can vary depending if the woman has a normal 28 day cycle or not. You get pregnant during ovulation, but if your cycle isn't the average 28 day cycle, then this would be different.

Answer 7

I had my due date moved up earlier in my pregnancy, but not as late as 30 weeks. It's not impossible, but by the time you get to be 30 weeks, the doctor is able to tell enough about the baby based on your measurements, etc, to know when you should be due.

Answer 8

I don't know that they ever "move up" the actual date. Though they may tell you to expect the baby to be born earlier than that original date if the baby appears to be larger than gestational age would suggest. They take measurements of the fetus' head circumference, and the length of the thigh bone, and if they appear to be larger than they should be, the doc may tell you to expect the baby before your due date. You sound like a normal mother who is tired to death of being pregnant. LOL Be patient, it will happen when it's ready. And don't rush things. You will be losing sleep and missing that pregnant belly soon enough.

Answer 9

An ultrasound would be extremely precise as there are particular measurements and attributes the fetus meets as they advance. That being pronounced, in easy terms 2% of infants come on their due date. some all of us is 10 days early and a few are 10 days late. I knew precisely once I have been given pregnate, yet my date replaced into later than i assumed it would possibly be. i replaced into nevertheless 10 days later than that. it truly is a secret.

Answer 10

My due date got moved when I was like 4 months. In nursing school I learned the traditional way to calculate it is go 3 mos back and add 7 days to the first day of your last period. Congratulations!