Just had a private dating scan - as I wasn't allowed one on the nhs (despite a history of recurrent miscarriage/missed mc). It wasn't because I was unsure of dates - just because I didn't feel very pregnant, and was worrying. I needed to see if all was well.
I thought I was 7+1. LMP 29 June, dtd 13 July......no chance I conceived after that date.
There was a fetus with heartbeat - but only 2mm long - and the scanner said it was not the biggest of gestational sacs she'd ever seen... so to me it looks like this pregnancy is on it's way out.
I'm going to the dr tomorrow to request blood tests over 3 days to see hcg levels.
The scanner said seeing the heartbeat was a positive thing - but as I seemed pretty sure on the dates that she would probably give odds of 60/40.
I have a nice lot of pics of the "dot" and even a dvd (as it was a private scan)...but now I'm just sad I have them as I'm pretty sure this preg won't make it. It was my last chance. Unplanned, we have 4dc, so dh will not want to try again. 
I'm taking progesterone and aspirin - which I've been advised to keep taking "just incase" the pregnancy IS viable.
I just can't figure out HOW the preg is viable. I know they saw a heartbeat - but this fetus really isn't developing is it. 