Approximately how many weeks of pregnancy does a 19mm gestational sac indicate?

[fairywing]

Questions in the title really!

Thanks!

Not sure fairywing - I had an early scan and the baby was 5.3mm, and the gestational sac was 16mm. They dated me as 6+0 and seemed to think those measurements were fine, so I'd guess 19mm would be 6/7 weeks, but obviously only going on personal experience and am not an expert!

Could you google and find a chart?

mine was 20mm during a 6+3wk scan so like pinkypanther said, it might be within the 6-7wk range.
hope this helps..

Thats great thanks, i was dated at 5+5 but have a 19mm sac which i think puts me somewhere between 6+5 and 7 from what i've read which fits better with my dates. Not sure if they have dated me wrong or something??