Sorry to hear that Nat, but I'm sure it's fine, as I've measured a week before in myrevious pregnancy and she just caught up. A week to 10 days is always ok in most cases I've read it everywhere and I'm sure they say so.. Ae u sure of your dates? You could have ovulated late perhaps ?
I have no symptoms, the occasional nausea but that's about it. Scan on Saturday. 8 weeks 2 days