Ultrasound shows the gestational sac but not the embryo?

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Question
Hello doctor,
The first day of my last period is March 24. On May 3, I missed my period, I went for an ultrasound and I had a 46mm DAP gestational sac without yolksac, no embryo, concluded that I was 4 weeks 1 day pregnant. May I ask if the pregnancy is slow growing? Ultrasound shows gestational sac but no embryo? Thank you doctor!
Anonymous customer
Answer
Answered by Doctor Phan Diem Doan Ngoc - Vinmec Central Park International General Hospital.
Hello,
With the question "Ultrasound shows the gestational sac but not the embryo, what's wrong? ", the doctor would like to answer as follows:
Gestational age according to the last menstrual period is correct only when you clearly remember your last menstrual period and your monthly menstrual cycle is 28 days regular. Because you did not specify whether your period is regular or not, the doctor cannot make an exact conclusion. Assuming your menstrual cycle is 28 days, the gestational age according to ultrasound seems to be 1-2 weeks later than the gestational age according to the last menstrual period.
However, to see if your pregnancy is developing well or not, you still have to have an ultrasound again about 2 weeks later or as soon as there are abnormal symptoms such as abdominal pain, bleeding. Depending on the results of the re-examination, your doctor will advise you further.
If you still have questions about ultrasound showing the gestational sac but not seeing the embryo, you can go to the hospital of Vinmec Health System for further examination and advice. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!

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