I'm 12 weeks today. I had a scan on the 24 Oct they told me I was 8weeks 4days, I thought I was around 12weeks then as my last period was on July ended near the 28th, also I did a clear blue test wayway before my scan and it said 4-5 weeks. Can my baby be small or age got the dates wrong as me my mum have worked it out loads and just does not add up ? ? k