Hello everyone, sorry I've been awol - I just wrote a really long reply to everyone and then went and lost it somehow 
So, to summarise:
What lovely news Northern and Twinkle, congratulations 
Welcome everyone new,
to everyone having a tough time, and everything crossed including the dog's paws for those in tww.
I had a second sort of trough too after my first AF, and am now feeling much better a week later.
As well as obsessive ewcm-watch, I got to grips with opk's (superdrug and clear blue) for the first time over the last few days - having always been far too impatient for them - and after much crossness got a line and a smiley face on day 16 (after ewcm for at least 4 days, which surprised me). All necessary measures have been taken, womb fleece at the ready 