How big is the gestational sac and when does the fetal pole and fetal heartbeat appear?

Patient's question:

No

Doctor's answer:

If the menstrual cycle is regular, generally a fetal pole and fetal heartbeat can be seen on ultrasound between 45 and 50 days of pregnancy. It is necessary to dynamically observe and perform another ultrasound after one week. If the fetus is developing normally, it should appear.