This is an impossible question!
But I am due to start the process of our final frozen embryo transfer!
(We had a transfer 4 years ago from the same batch that didn't work)
We have a 3 year old that miraculously arrived the month after the last failed transfer.
I am 41 now and wondering how caught up in egg quality I should get - trying to keep as healthy as possible this month as I prepare for the transfer maybe next month - medicated.....
Been unexplained so far.....