Hi @Cooki, on my 7wk scan Bub measured behind which freaked me out badly so can relate to your anxiety- Especially Ivf the dates don't change! The only difference was mine only measured 4 days behind and not 9. Is your ob worried? I've been told apparently 7 days either way can be OK? Mine was right on track again for my next scan I think, so they can change a bit depending on their growth and the person scanning you.
I've got my fingers crossed all will be well for your little one. Have they recommended any more scans to check you and Bub again in a couple of weeks? Depending on how far you are you could also get your hcg checked again but that does decline when you get further into pregnancy again too.
Thinking of you, it's a very nerve wrecking and stressful time without being told news like this 💕