You are here:

Childbirth/gestational age

Advertisement


Question
Hi Dorothy,
   Thank you so much for your response. One thing is still not clear. You mentioned that ultrasound is very accurate, especially with late ovulation or an irregular cycle. The fact that the first ultrasound measured the baby at 6 weeks, 1 day, instead of 6 weeks, 5 days (since my last lmp), can this be attributed to a 32 day cycle, hence the 4 extra days, or can the ultrasound at 6 weeks be off by that many days? Thanks again for your patience!

Answer
Hi Kaitlin,

A 1st trimester ultrasound is generally accurate within 3 days.

The ultrasound may have been off by 1-3 days and your cycle was also off by 1-3 days, adding up to a 4 day difference.

I hope that helps; let me know if it's not clear.

Sincerely,

Dorothy H, LCCE

Childbirth

All Answers


Answers by Expert:


Ask Experts

Volunteer


Dorothy H, LCCE

Expertise

As a certified childbirth educator and birth doula, I can answer questions dealing with preparing for birth, childbirth classes, pregnancy, what happens during labor and birth, doulas, VBAC, natural childbirth, cesarean birth, interventions in labor, labor, birth, helping someone through labor, concerns or fears about labor and birth, doulas, breastfeeding, and other topics dealing with pregnancy, labor, and birth.

Experience

Since 2004, I have taught childbirth education classes focused on helping couples gain confidence, make decisions for their birth, and give them tools for helping them get the birth they want. Since 2004, I have also attended births in local hospitals as a birth doula (as of 8/10, I have attended 120 births) so I am able to see firsthand what is working in helping couples deal with labor. I am also a mom of five children, and have various birth experiences myself, including unmedicated birth and a cesarean.

Organizations
Lamaze International DONA International

Publications
International Doula Magazine

Education/Credentials
I am a Lamaze-certified childbirth educator. I am a DONA-certified birth doula.

Past/Present Clients
I work with approximately 4-6 couples a month with my childbirth classes. I attend 2 births a month with doula clients.

©2012 About.com, a part of The New York Times Company. All rights reserved.