Hi Mersea (are you a francophile?) and Jenjen. Welcome and fx for you both.
You all already know my age and would-be-grandma status by now 
Well, I'm on CD16 and definitely in the POAS mode. I usually get a +ve on the OPK on day 17 or 18. Dontcha love it when THE time to DTD falls over a weekend? You don't get that "what if something comes up (apart from DH!) and we can't" panic. And you get all day to do it!
We need a BFP on here soon to get us off to a good start ...