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A 23-year-old female asked:

is gestational age accurate from ultrasound at 9 weeks?

1 doctor answer2 doctors weighed in
Dr. Jeffrey Shyu
Radiology 11 years experience
Yes it is: By that point, ultrasound is the primary tool to estimate gestational age. More accurate than last menstrual period.
Dr. Gerard Honore
Fertility Medicine 29 years experience
1st trimester US is consider accurate to +/- 3 days; personally, I believe it can be better than that. US becomes less accurate I the 2nd and 3rd trimester.
Feb 11, 2014

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A member asked:

At what gestational age will my milk come in?

2 doctor answers3 doctors weighed in
Dr. Pamela Lindor
Pediatrics 32 years experience
3rd trimester: Most pregnant women will notice changes in their breasts early in pregnancy. Colostrum is produced starting toward the end of the second, or beginning of the third trimester (around 28 weeks gestation). Some moms will notice colostrum leaking from the breasts in the third trimester.
A 31-year-old member asked:

What does it mean if my baby is measuring big for gestational age?

2 doctor answers2 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctoranswered
A US doctor answeredLearn more
Depends: The average woman is around 5 ft. 3 in tall. If you had two women, one who was 5 ft 10 in tall and another one who was 4ft 11 in tall, you would not say either of these women are abnormal, just outside the average. So a baby that measure big for gestational age is outside the average. What you need to know is by how much is the baby outside the range of average.
A 32-year-old member asked:

Can measurements taken from an ultrasound lead to a wrong estimation of gestational age?

2 doctor answers5 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctoranswered
A US doctor answeredLearn more
Yes: An ultrasound done in the first trimester will be accurate to within a week of the due date. In fact don't think of it as a due date, but more as a due week as 90% of women will have their baby one week around their due date. Ultrasounds in the second and third trimester will be accurate to within 2-3 weeks of the due date.
A 38-year-old member asked:

Which ultrasound results suggest a miscarriage?

2 doctor answers4 doctors weighed in
Dr. Parul Krishnamurthy
Obstetrics and Gynecology 34 years experience
Empty sac,no beat: Miscarriage on ultrasound is determined if a pregnancy sac is evident but no fetal pole is seen or there is a fetal pole but no fetal heart rate is seen. Absence of fetal pole, could be due to the pregnancy being extremely early, then a follow up ultrasound is advised in 1-2 weeks. At all times unless an intrauterine viable fetus is detected, an ectopic pregnancy is in the differential diagnosis.
A 26-year-old member asked:

When during pregnancy will I have my first ultrasound?

2 doctor answers3 doctors weighed in
Dr. Craig Keathley
Obstetrics and Gynecology 24 years experience
8-10 weeks: In most practices that I am aware of, an ultrasound is performed early in order to establish the best dating criteria for the pregnancy and give a firm due date. Later ultrasounds are better for evaluating the fetal anatomy (usually 18-20 weeks) but they are less accurate at establishing a due date.

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Last updated Apr 1, 2015

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