Doctor insights on:
What Is More Accurate Measuring A Baby Or Lmp
Babies can measure too big or too small, does that cause your LMP date to be off? Or make it seem as if you're further along than you thought?
LMP date could cause: You may have recalled your last period date (lmp)incorrectly and then your due date may not be accurately calculated. You may have gestational diabetes and that can cause a fetus to grow larger more rapidly than it should. You may have decreased blood flow from the placenta to the fetus ( like from smoking) and this can decrease the rate of growth of the fetus. ...Read more
Do babies measure on time as to when they were conceived? Thats where your edd come from or from your lmp?
Lmp: Lmp is the date we use not conception. People often think conception. ...Read more
My LMP was dec 15. I had intercourse dec 20, 21, and 22 then with an ex on january 22. I'm due sept 21. Who its more likely to my babies father ?
Difficult to say: More likely the dec partner, but timing should have been up to a week before ovulation...Which "might" still result in pregnancy. Jan date should give a october edc. May get better estimation of conception with later pregnancy ultrasound, particularly if due date shifts. Or will need paternity testing. ...Read more
1st u/s was done@12wks (but measured12w+4d) then the 2nd one, based on lmp, the u/s tech said 17w+4d, but then said i was measuring 18w. Accuracy?
Normal: There is no need to change your dates if there is less than 1 week difference between you lmp dates and that 12 week ultrasound. ...Read more
31 week us baby is measuring 1 week and 4 days ahead. Is this normal? Both earlier us matched LMP to the day. Does this change conception or lmp
No change: At 31 weeks, your due date is very firmly established and wouldn't change. What can change, of course, is the baby's growth. And it sounds like you're baby is growing well. It's possible if you or your husband (or both) are taller or bigger people, that your baby is just on the larger end of spectrum. Sometimes, if mom has diabetes, there can be macrosomia. Speak with dr. So you know diagnosis. ...Read more
By LMP I am 7w4d today. U/s 2 weeks ago told me turning 5w. Only sac, baby barely visible. Today, fetal pole and hb but baby measuring 5w6d. Problem?
Very early US dating: Not as good as us between 7-13 weeks. Measuring the fetal length (called a crown rump measurement) is the most accurate. The good news is interval growth, including a fetal pole with cardiac activity. Another followup us in 3-5 weeks could confirm additional interval growth and measure the crown-rump distance to re-evaluate dates. ...Read moreSee 1 more doctor answer
Aug 7th Scan says 12 w 4 d. no lmp to go off. whats accuracy in telling me proper age of baby? and is that from conception?
Quite accurate: A prenatal dating scan at that part of the pregnancy is quite accurate. All dates are estimates, and in this case, conception would be about 2 weeks after the official start date. That means conception would be 10 weeks and 4 days ago, plus or minus one week. In general, the exact conception date is not important and is never known with certainty, with a "natural"pregnancy. ...Read more
Lmp 4/25/12 & my edd is 2/14/13 at 5w. I did a new scan at 7 months and the baby measured 2 weeks ahead with an edd of 1/30. Which edd is accurate?
Go with early US: As gestational age increases the error range increases. The most accurate estimates come from 1st trimester us. ...Read more
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