"I am 6.1 weeks pregnant. During the dating ultrasound, we saw the gestational sac and yolk sac but not the embryo. Should I be worried?"

It is understandable that you may be worried given your previous experience, but it is normal not to see the embryo at such an early stage in the pregnancy. The fact that the radiologist mentioned that everything looks good is a positive sign. It is best to wait for your follow-up appointment to get more information. Wishing you a positive outcome in the coming months.