Thanks guys, I am glad they saw a heartbeat even if I didn't. It really does not make sense to me, I don't mind being wrong but wish someone had the time there to explain how it is possible! OH is delighted, I am happy but cautious about it but its just my obsessive scientific brain not shutting off and leaving the dates alone! But, will see what we have on the 21st when I go for my follow up scan at the private place. Should see a 7 week pregnancy rather than 5. Just got to hope it grows well in the next few weeks and they werent just misreading the heartbeat! x