Gestational sac measuring large- any experience?

[Diggum]

I had an early scan today at 7 weeks by dates.

Baby is measuring 7 weeks and heartbeat seen but the gestational sac is measuring 9 weeks.

There's no evidence of a vanishing twin (although maybe there wouldn't be) but I've been sicker in this pregnancy than my last. Not at hyperemesis levels by a long stretch though.

Sonographer was happy with the baby and I'll have another scan in a fortnight to see if things have evened out.

I'm not particularly worried as the baby part is looking good, but of course Dr Google is calling, so I just wondered if anyone else has had similar measures and did it turn out to mean anything?

Thanks in advance.

[lilisawyer]

Any updates I'm having this now