Fetal heart and fetal buds can generally be seen in 6-7 weeks of pregnancy ultrasound, if the usual irregular menstruation, easy to delay then ultrasound to see the fetal buds will be later, the specific latest when to appear according to the delayed menstruation time to determine the need for regular review to determine.
1. regular menstruation women, cycle 30 days, theoretically 6-7 weeks after menopause through the ultrasound can see the fetal buds and primitive heart tube pulsation, if menstruation is usually easy to advance or delay, then the time to see the fetal buds will also be advanced or staggered.
2. If you can’t see the fetal buds and primitive heart tube pulsation by ultrasound examination at around 50 days of pregnancy, and your menstruation is usually delayed for many days, then you don’t need to worry, and we suggest you to repeat the ultrasound examination every other week regularly, if you can’t see the fetal buds and heart pulsation by ultrasound examination for many times, then you need to consider that the fetus may be terminated, and termination of pregnancy is needed as soon as possible.
If the ultrasound examination does not show any fetal buds or heartbeat on the 50th day of pregnancy, it is recommended to have regular checkups under the guidance of your doctor.