Depends on technique: Transabdominal scans (see pic) with a low frequency probe and an heavy pt. with a tilted back uterus might not show a heartbeat (HB) at 9 wks, esp. if dates are a little off (irregular periods). BUT, a resonable trans vaginal U/S (probe in the vagina) would be expected to show a HB at 9+ wks. Maybe this will be done along & blood tests. For support see: http://www.miscarriageassociation.org.uk/
Answered 1/23/2016
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