Anne,
Has DH gone to a urologist? After a couple of rounds of clomid (without IUI) when we were first trying, my dr did an analysis and kept coming up with completely different counts for him. One day it would be very very high with good quality and motility, then two days later 1 mil with poor motility, etc. Finally, he was referred to a urologist (we ended up paying most of the fees for the services even though we have insurance) He was put on cipro for possibly having bacteria in the semen and ever since his counts improved. They still tend to waiver a little, but have been consistently high enough to please my dr. I am not sure of all the specific details with the bacteria presence because I heard everything secondhand from dh, but it's a thought.
So sorry to hear your news. I hope clomid works for you next time. Injectables weren't TOO bad for me (other than the horrible pain in my ovaries and the schlepping all over town for ultrasounds and blood tests) but I hope you don't have to resort to that. Keep the faith, it will all work out for us some day. I have to believe that, or I'll go crazy wondering WHY. My sister had a child a couple of years ago because she wasn't using bc. She's not married and had never intended to have children. She's a great mom, but I was still completely devastated by the unfairness of the whole situation. Now, I'm good with it, and I love my niece to pieces.

Hang in there!