I'm having blast transfers - they usually go back in on day 5 or 6, so I should have asked them to do a P4 test at my last transfer. I was too shaken up by losing yet another defrosted embryo so I completely forgot. That's our other problem - hyperstimulation that prevents me from doing fresh transfers, but also impacts on my egg quality so we have major issues getting them out of the freezer and surviving!

BW