Canadian Is Nine Weeks Pregnant, Has Enlarged Yolk Sac And No Fetal Pole: Is There A Problem?


Question:

Hi Dr Ramirez,

I was prescribed Clomid this cycle and am now pregnant. I am currently 9 weeks along. I went for an ultrasound at 8 weeks, 1 day pregnant and my measurements indicated that I was 8 weeks, 6 days pregnant. There was no fetal pole found. The yolk sac is measuring 8.6 mm. I am doing HCG/progesterone testing every other day -- so far all levels are within range. I am going for a follow up ultrasound at 10 weeks pregnant. Is the enlarged yolk sac a bad sign, even though my measurements and bloodwork are good?

Thanks, E. from Canada.

Answer:

Hello E. from Canada,

Assuming that your dates are correct, the yolk sac size is not a problem but the fact that there was no fetal pole or fetal heart motion at 8 weeks is bad. Usually by 6.5 weeks gestational age, a fetal pole and heart beat can be detected. This is seen for sure by 8 weeks. An empty gestational sac is called a "blighted ovum" and basically means that the sac developed but the fetus did not. You should not have to wait until 10 weeks gestational age to make the diagnosis. Your doctor should make that diagnosis already and recommend treatment.

If you wait too long, then a D&C (surgery) would be required to clear the uterus. At an earlier stage it can be done using medication alone. I should not be the one to be the bearer of bad news so I am sorry that this answer is not reassuring. You need to talk with your doctor right away and don't let them put you off or avoid the issue, like they seem to be doing.

Take care and good luck,

Dr. Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
www.montereybayivf.com

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