Many thanks, Pocket and Prambo!
What will be, will be! I feel optimistic about it but let's see how it goes. Everything is going v smoothly so far.
Prambo, congratulations on your pregnancy!!! Re last year's DE, everything seemed to be going well right up until the 20 week scan when a number of serious heart defects were detected which couldn't be fixed. Ultimately, our little one's life wasn't viable. As she grew bigger her heart wouldn't have been able to cope and she would have struggled then died. I had the pregnancy terminated at exactly 5 months. It was a heart-breaking decision - terribly, terribly sad - but I believe the kindest thing to do. That was in March. I had to wait a few months for my body to recover before trying again but to reach the top of the waiting list at the clinic. The UK clinic we used last time have sent through 3 potential matches which - to our minds - weren't good matches so we decided to go to Spain, to get things moving. Yes, we're using embryoscope and I'm interested to see how that goes. Did you use that? How was it? The clinic will do either 3 or 5/6 day transfer.
I have a wonderful, naturally conceived, 8 yr old DD from a previous relationship and I so want a sibling for her (even if they won't be genetically related!).
Come on, Vall, let's do this together! 
Big congratulations London - believe it and enjoy it!!