How early can a heart beat been seen on Ultra Sound?

[minimatron]

Hi and congrats on your pregnancy.

I had an early dating scan post miscarriage and the hb was detected at 5 weeks 3 days, however it was slow and the sonographer suggested it must have only just started beating. I also think there was some descrepency in dates. An u/s from 6 weeks should show a hb...any earlier and its a chance that you may see it or may not.

[TUP]

Thanks, I had a feeling 6 wks is probably best. I did google it, but wasn't sure, some people said after 5 wks... I think I will try to get a scan at 6 wks..

[Calluna]

Conispatulations on your pregnancy.
Yep 6 weeks is the earliest, dont stress if they cant see it yet though. When I was 6 weeks 3 days I went for a dating scan, bub only measured 5 weeks something and there was no heartbeat. We went back a week later and there it was flickering away (he's now a very healthy 11month old. )