Give it time: The yolk sac and gestational sac are the earliest structures to form inside the uterus. If on a repeat US, you dont see a small embryo, it can be correlated with the time of your pregnancy, your hormonal levels and that can be used to determine the viability of the pregnancy. Best Wishes Dr M
Answered 11/27/2017
1.4k views
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question