How Early In Pregnancy Can A Heartbeat Be Detected On Abdominal Ultrasound?

with my daughter it was about 2 weeks.

A heartbeat can usually be heard as early as 4 weeks after conception. It can be heard 3-6 weeks at the start of the pregnancy.

On the abdominal ultrasound its safter to see the heartbeat at 10 weeks (8 weeks after conception). For a vaginal ultrasound you can probably see it at 6 weeks (4 weeks after conception). This depends on if you have your conception dates right as it may still be smaller than 6 weeks so it causes a lot of panic unnecessarily. 6 week vaginal ultrasounds should at most just eliminate tubal pregnancies and the heartbeat being seen be a bonus.

To hear the heartbeat you have to be 12 weeks (ultrasounds before that can only see them).

Its very easy to miss a heartbeat even at 8 weeks on an abdominal ultrasound due to fatty tissue, position of cervix, scarring if from a previous c section or endometriosis or other. Usually if there is any problem a follow up scan needs to be done a few days or a week or two later.