So around 4 weeks ago I went to the epu and was told that everything was perfect, I was about 5-6 weeks and the crl was 2.8mm and there was a heartbeat 
Today iv had some mild spotting so went to a&e and mentioned this to the doctor and he said there should not be a heartbeat at that early on and with a baby so small. I know they could have got my dates wrong but why would the baby be so small with a heartbeat?
My dp seems to think that there could be another baby that they have missed and that's why it was measuring small.
I'm really confused by this now and so was the doctor and he can't get me a scan until Tuesday now 
Has anyone else measured small and had a heartbeat and the dates were right?