I'm currently 6dp5dt on first ivf cycle. I'm 37 with an AMH of 11.5 and before beginning the cycle we were advised that they were expecting 7-8 eggs from me. In the event, they managed to collect 12 mature eggs of which 10 fertilised, which both we and the clinic were delighted with. However, after that good start, we ended up with just 1 blast on day 5, graded 4BB, which was transferred fresh. A second embryo made grade 4BC blast the following day and has been frozen. I understand that usually 30-50% day 3 embryos make it to blastocysts, but in my case it was only 20% and I was lucky to get that after having been warned on day 3 that it was possible none would make it (at that point I had 4 grade B, 4 grade C and 2 grade D.
I'm worried that this doesn't bode well either for this cycle or future cycles. I've come across lots of stories of people having success after having a very small number of fertilised eggs, but nothing about success after such a big drop off once the eggs have successfully fertilised. I wondered if anyone had any experience of this that you could share?