I just posted something similar ...

Go get bloods done.
I wish I had insisted earlier to get them done.
I was pretty certainly my dates etc, so thought we were 8 weeks went for scan, apparently we are 5 weeks. I personally would rather be faced with the reality of what is happening (although I'm trying to be positive) I realise the odds are against us so far.

At least bloods will pick up changes in hcg levels hence less stress of not knowing what's likley to happen.

Personal choice I guess...

Good Luck and sending sticky vibes your way.