Murrycod-I'm with the other girls i would BD for the added reasurance and if (touch wood) harvey or harriet doesn't survive thawing then you will feel better that at least it wasn't a wasted cycle and you are still in there with a chance because as we both know the waiting is the worst but to wait all that time and not even be able to do a transfer is devastating it was for me i wish i had decided to have one of my grade 3 embryos transfered at least i would have walked away with some hope and not heartbreak after all those months waiting but at the time we were scared of having another sick baby now when i think about it those grade 3 embies would have been the same chance as trying the natural way and they went to waste if only i could go back and do things differently.