Alloy, there is no rules for either pessaries or crinone. Each cycle can be completely different response in my experience. The GOOD thing is AF is staying away and hence you have a good chance of it being a BFP. Can you bring your BT forward to monday?

JBM, thanks and good luck to you too hun. Someone came up with another acronym recently for the TWW - can anyone remember what it was (ooooh perhaps I have pg brain already !)

Neptune, don't forget nasty POASes can be wrong - just ask BW she had a BFN POAS and a BFP BT on the same day. Others have had similar results. Good luck with the exam as well as the BT!