I absolutely agree with you sushee. I know a close friend who got pregnant and unfortunately miscarried at 13 weeks. Initially she got pregnant on the first attempt at trying if you will. It then took her another year to have her baby. My doctor told me that most women will have many months where the sperm has fertilised the egg but for whatever reason it has not implanted, for no apparent reason. It therefore is no surprise that it should take quite a few attempts to get pregant through IVF.

Obviously I'm saying that now but at the time of a negative result you ask why it didn't work. I agree that a embryo that is going to "work" will work regardless of whether you hav it put back at two days or at 5/6. It must be so when you think about it otherwise how come women get pregant standing up, while they are drunk, while they are on the pill, while they are smoking. We stop smoking, cut down on caffeine, stop drink etc, because we want the best possible chances, the chances are, it doesn't make that much difference. I like most of you want the best odds, and if that means blastocyst transfer, that is what I'll be doing and then praying to anyone who'll listen to keep that embryo inside me.