Hi, dont know much about the chromosome thing, but we too were scared that we might find nothing to do IVF with, so hubby had sperm biopsy done and froze what they found. that way I can now safely try to do ivf knowing that we have frozen sperm there waiting. He will only have to do this once, (bit painful) but you can then go onto trying to concieve while he is away at work like my partner does... Fly in fly out for 5 weeks at a time... best of luck with it, at least you guys found out the prob early so lots of positive vibes to you both.. Tell DH he is not alone and not out of the race. If you pass on the chromosome thing to your son,, IVF will be way advanced by the time he wants to have kids too... hope this helps you to go on your journey with positive outcome...