Pregnant for 43 days, no pregnancy test positive

Patient's question:

No

Doctor's answer:

Ultrasound examination can detect the gestational sac after 5 weeks of pregnancy, and the detection rate of gestational sac reaches 100% at 6 weeks of pregnancy. From 6 to 7 weeks of pregnancy, the embryonic germ can be seen, and the primitive heart tube can be observed when the embryonic germ diameter is 2mm. At 8 weeks of pregnancy, the initial human shape can be seen.