(sperm fragmentation of 34%) and the difference between our unsucc and succ cycles was that instead of a 3-day transfer, we did a FET of a 6-day blast. I believe the male "gene" kicks in after the third day, such that if we had to try a third (or fourth, etc.) time, I would have INSISTED on letting any fertilized eggs grow out to at least day 5 so it was clearer which ones were most viable. Not sure if this applies to your situation but hope it is helpful to someone!
SMRC
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