Just to give another perspective, we have zero fertility issues. I am a good responder to drugs and DH has good swimmers. We utilize IVF/PGD for non-fertility genetic reasons. We have had one success (healthy DS) out of 3 stim cycles and 4 FETs and probably at Day5 pre-PGD ~ 40 embryos total. At the end of the day statistically it's like 30% successful in the best situations, so try not to beat yourself up. I know it's easier said than done, but at some point the numbers will turn in your favor, especially if your RE knows what kinds of adjustments to make. The hope is the numbers work before the $ stops, right?
Good luck. All of you guys!