Just read your first post again regarding 10 eggs but none go pass Day3, I thought to let you know that when there is a big drop off from Day 3-Day5, this is when sperm DNA start to kick in, so it is worthwhile to get a test called SCSA done on the sperm. It shows the % of DNA fragmentation in the sperm. Anything over 30% is hard to result a live birth.
I didn't mean to add another thing for you to worry about, but I wish I'd know this earlier before I wasted a two cycles to find this out, especially this is quiet easily fixed just by taking some vitamins.
Hope tomorrow b/t will show some positive result and you don't even need to think of this...