So 10 days ago I went for a scan and they saw the yok sack with little blood next to it (attached picture Bellow).

Then Friday I went for a scan and the yolk sac got a little bigger but not big enough I should be 7 weeks so we should of saw the heart beat but nothing and they said there's more blood so they said I think your having a silent misscarage I have to go back in 2 weeks for them to confirm. I'm hoping they have got it wrong. What are your thoughts?