Hi puffsgirl11, I am so sorry your DH's biopsy wasn't succesfull. I really don't know what to say and don't understand at all why they wouldn't find any sperm in the biopsy, if there actually was some sperm in the SA. As you said that means he must produce some.
What sort of biopsy did he have done? I think there are different ones. Did they do a needle one or an open biopsy?
I really hope you get some answers from your FS this week.
Big hug!!!!!