Doctor insights on:
When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more
BPD: Well we use more than just bpd to calculate the gestational age. Head circ., femur length, and abdominal circ. Also go into the calculation. However, 4.1cm bpd is consistent with about 17 weeks 4 days. ...Read more
LMP & ovulation: Ovulation can occur anywhere from 14 days to 21 days after the LMP dependent upon the length of your menstrual cycle. When pregnancies are computed we use the LMP as an ESTIMATE to standardize the pregnancy length which is accurate to only Plus or minus 10 to 14 days. In other words, trying to backdate ovulation after pregnancy is difficult and is only a "guesstimate". ...Read more
How many days does it take for the bleeding to stop if misscariage happened in 5 weeks gestational age?
What is the earliest day intercourse could have happened if gestational age at 12/12/13 was 9 weeks 1 day?
If its said that a 12 week old fetus measures 57 mm, than what is the gestational age of a fetus measuring 62mm?
Crown-rump length in fetus:
57 mm= 12+2 (50%) weeks,
62mm= 12+4 (50%) weeks
reference: http://www. Bmus. Org/policies-guides/23-17-3-161_ultbmus. Pdf. ...Read more
When a fetus is "measuring small" how is that determined? Wouldn't it just mean that the fetal / gestational age is off?
Yes and no: Yes, if the gestational dates are off. No, if they are not and the biparietal diameter of the fetus does not "measure up" to the appropriate age indicating "small for gestational age or intrauterine growth retardation.". ...Read more
Based on fdlmp 09.14.13 I'm 6w4d, based on my first u/s 10.28.13 it measured my gestational age at 5w3d, when did I conceive?
Why are fetal measurements measured by weeks plus days and not just by weeks? Are the # of days just as important to determine gestational age?
Precision: By convention gestational age is stated in weeks. For precision and accuracy weeks and days are usually indicated when specifying a gestational age. For example, some tests may be done at 15 weeks but not at 14 weeks and 6 days - so the number of days is important as well. ...Read more
Is the gestational age of a fetus measured by how big it is? If so, can't some fetuses be bigger than others which can cause due dates to be off?
At 7 weeks and 3 days (past lmp) 5 weeks 3 days since conception my scan says 11.8 mm what does this mean and is this right for gestational age?
Perfect: Both of your dates match and this is a perfect measurement for seven weeks and three days. Absolutely no worries at this point. ...Read more
My newborn son's age is 236hours as of now. His gestational age when born was 35.3 weeks. Today morning his billi was 11.9.Is it normal and is he fine?
Lmp- 1st oct.'12 for 3 days. 3rd u/s onwards done in 12th week, my LMP as per gestational age comes to be 27th sept. Could I have conceived on 25th sep?
No: If I understand you correctly, your actual LMP (10/1) and your estimated LMP based on the measurements of the fetus during ultrasound (9/27) are very consistent. You could not have conceived on 9/25. It would have happened about two and a half weeks later. ...Read more
Pregnancy weeks: The number of average total weeks from last period is 40 weeks to due date. If someone conceives 2 weeks after menstrual period that means she will conceive about 38 weeks later. The standard when stating how pregnant you are is determined from the last menstrual period however. Example : if you conceived 8 weeks ago you would be called 10 weeks pregnant. ...Read more
Yes ask your OB: If you have regular 28 day cycles then u can figure back, your OB should be able to do it for u. ...Read more
Gestational age: Most medical providers "date" the onset of pregnancy from the "lmp", but more accurate dating is from an ultrasound. Also, ovulation occurs after the period and it may be delayed by a week or so. As your pregnancy progresses, the ultrasound exam will provide a much more accurate gestational age. ...Read more
Late ovulation: I'm not sure I understand your question, do you mean that you were 0 days pregnant on April 15th based on your due date? If this is the case, then it is possible that you ovulated later than expected based on average cycle length and your date was changed based on the measurement of the baby based on ultrasound. The very first dating ultrasound gives you your due date. ...Read more
Yes 4 weeks!!!: U are either 14 or 18 cannot be both and an us should give u good dates 18 much more developed than14 weeks can see much more on us. ...Read more
No.: That is close to an 11 week fetus. Far too large for an 8-9 week gestation. ...Read more
Initially, from LMP: The edc (estimated date of "confinement") is based on the first day of the last menstrual period. But the edc may be adjusted on the basis of early ultrasound exams which can pinpoint the due date to plus or minus less than one week. Ultrasound dates are based on fetal measurements. Hope this helps. Lgromkomd. ...Read more
My gestational age doesn't date back to my lmp march 24th it dates back to April 15th why is this?
It depends on method: It depends on the method (s) used to determine gestational age such as ultrasonography as well as whether the March 24 period was a "full" and normal period. Ask your OB MD how the new gestational age dates were determined. ...Read more
Need advice on what is the the difference between the gestational age of a fetus and how many weeks you are?
Same thing: The way you count is from your last period, it is 40 weeks from your last period until your due date so when you are 6 weeks gestational age it means 6 weeks from your last period which is how many weeks u are (most people get pregnant 2 weeks after their last period) but u always count from the 1st day of the last period, and in my office in coral springs, fl, I always do an early ultraosund. ...Read more
Can the reading of a 10 week gestational age be wrong? Is it possible that the crown can be larger than other fetuses?
Yes: Prenatal ultrasounds are not 100% accurate. Readings also depend on the training and experience of the tech and the ob. Ultrasonography cannot detect certain anomalies in the fetuses. There have been cases when fetuses have been aborted to find out, in the post-mortem, that they were perfectly normal. But, ultrasound remains a great diagnostic tool and many lives have been saved by it. ...Read more
About 7 days: First trimester ultrasounds are the most accurate, but a 13 week ultrasound should be quite good at estimating the due date. Best of luck! ...Read more