How big is the gestational sac at 42 days of pregnancy

Patient's question:

No

Doctor's answer:

Hello, generally speaking, at 5 weeks of pregnancy, the gestational sac is about 1.2 cm in size; at 6 weeks of pregnancy, it is about 2.0 cm. When you were 40 days post-menstruation, the gestational sac was 0.80.7 cm, which is less than 5 weeks. It is considered about 1 week smaller.