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asked Jul 30, 2022 in Baby Health During Pregnancy by Cyrus
I am currently 7 weeks pregnant, but the ultrasound showed an empty sac. However, according to my last menstrual period, I should be 9 weeks pregnant. What should I do in this situation? Is there any cause for concern?
Artificial Intelligence Health Assistant's Answer

If you are 7 weeks pregnant and the ultrasound shows an empty sac, it can be a cause for concern. This condition is known as a blighted ovum or anembryonic pregnancy. It occurs when a fertilized egg implants in the uterus but does not develop into an embryo.

In most cases, a follow-up ultrasound will be scheduled to confirm the diagnosis before making any decisions. It is possible that your dates could be off or that it is simply too early to detect the embryo on the ultrasound.

However, if subsequent ultrasounds still show no signs of development after several weeks, it is likely that you have experienced a miscarriage. At this point, your healthcare provider will discuss your options with you.

Some women may choose to wait for a natural miscarriage to occur on its own. Others may opt for medication or surgical intervention to remove the pregnancy tissue.

It's important to remember that experiencing a blighted ovum or miscarriage does not mean there is something wrong with you or your ability to conceive in the future. It is estimated that about 15-20% of pregnancies end in miscarriage during the first trimester.

If you are feeling overwhelmed or need emotional support during this time, consider reaching out to friends, family, or support groups specializing in pregnancy loss.

Always consult with your healthcare provider for personalized advice and guidance based on your specific situation.

1 Answer

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answered Nov 16, 2025 by (925 points)

I had this happen with one of my pregnancies and it sent me down a Google rabbit hole, but it didn’t mean the worst. Dates can be off if you ovulated later than you thought or if implantation took longer. At what was supposed to be 7‑8 weeks my ultrasound just showed an empty sac and they called it a “possible blighted ovum”. My midwife had me come back a week later and there was a little heartbeat flickering away.


Unfortunately sometimes it does mean a pregnancy isn’t developing and your body hasn’t caught up yet. The only way to know is to repeat the scan and maybe do some blood work to see if your hCG is rising. For now try to stay off Dr Google and take care of yourself. Hugs – waiting is so hard but many women have good news at the next scan.

commented Jan 16 by Zoi

My last lmp is 7 weeks but ultrasound show a gestational sac ar yolk sac 4weeks6 day what should I do 

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