trust me, i know how frustrating and upsetting it is! I'm on IUI number 7 and hoping for the best. Personally this is the last round for me. With the $ we've spent and the emotional draining of it all we're stepping it up a notch next cycle and doing IVF if this doesn't work. From what I"ve read there are people who have had success after numerous IUIs, you just need to do what's right for you.
Best of luck!

__________________
Me - 36, Endometriosis, CF issues, poor egg quality (which I hope we'll fix!)
DH - 39 A OK
4 IUIs, all

Laparascopic surgery to diagnose and remove endometriosis.
3 IUIs, all
September 2008 - IVF
BCP and Lupron
Started stims 8/14
ER week of 9/22
Transfer 9/29 - Transferred 2 embies
Beta October 13



Sadly another
IVF #2
Started BCP December '08

Praying!!!