MayC, I think the delay will be with drug-controlled cycle only, not if you are doing a natural cycle. I imagine that with the natural cycle then they will do the ET after ovulation but because ovulation is not under the doctor's control then they will have to do it when your body decides. With me, I am taking drugs - hormone replacement therapy - to simulate a cycle but the doctor can decide when I "ovulate" (although no eggs are being produced so no real ovulation). Because my uterus lining is too thin then he is keeping me on the drugs until he decides the time is right. You won't have the same problems on the natural cycle because it is your body doing everything, not artificial drugs, so your body will prepare itself properly.
My doctor was also saying that being in the right frame of mind is important, so I second you when you say - chin up! It will all work out for us, just sometimes takes a little longer than we would like!