at six weeks what kind of image should be visible on an ultrasound.  All
that was seen on mine was an empty sack.  Is this normal?

in an earlier pregnancy thats all that there was, an empty sack, but that
was at nine weeks.

any help appreciated

Thanx

There is a good web site explaining sonos and giving many examples
at the URL:

http://home.hkstar.com/~joewoo/joewoo2.html

Meg F