When can the heartbeat first be detected?
The human fetal heart begins beating about 22-23 days after conception. (Though the heart is not yet fully formed, cardiac muscle contractions have begun.) That's called the 5th week of pregnancy, since it's 5 weeks after the last period. The fetus at this stage is between 2 and 3 mm in size.
Sometimes it's possible to detect the heartbeat, with a Doppler instrument, almost this early, but usually the first such detection is later, around week 10, or at least by week 12. By week 21, the heart can be heard with a standard stethoscope.
What if no heartbeat is heard at 9 weeks?
If you have an ultrasound at 9 weeks and there is no heartbeat detected, that means your pregnancy isn't viable and you're having a miscarriage. But if you're talking about not being able to hear the heartbeat via Doppler at 9 weeks I wouldn't worry too much as sometimes dopplers can't pick up a heartbeat until around 14 weeks.
Doctor found yolk sac gestational sac and fetal pole at 5 weeks 6 days but not heartbeat Is that okay?
It is probably OK. The heartbeat is usually always present by six weeks even though it isn't generally detectable at five weeks. So your scan was done at a borderline time. Sometimes babies are actually younger than the dates indicate and so there isn't cause for concern just yet. If no heartbeat was detected in a subsequent scan and if your hCG levels started to fall, that would indicate a problem.
Can heartbeat be detected at 7 weeks?
Well the heart develops and begins beating around week 5 and can usually be detected around week 6 1/2-7. If you doctor doesn't feel that this is an issue then it is probably fine. Sometimes gestational age is miscalculated or the fetus might just be a little behind. If you do not feel that your doctor was concerned when you were, then you might try finding a different doctor. When you call to make an…