This is my US at 4 weeks 6days. The blue dot is definitely a baby. However I keep eyeing the dark circle next to the red circle. Does that look like an additional sac? What is that?

Trecika

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors