I just got my positive Beta today after IUI. Good luck
Most studies show 20-26% success rates with the highest being between the 3rd and 6th attempt. Also US studies say three follicles gives you the best chances where European studies says 4.
My RE gave me only a 6% chance. I can't remember what that was based on tho - age? I did 2 IUI's and they both failed. the first one i had 4 follicles and the 2nd one i had 2 BUT I also read that the average amount of times to get it to work is about 4 and sometimes it takes as much as 6 times. good luck and stay positive!!
My dr. always told me that IUIs give you 15-20% chance of pregnancy, which is actually really close to that of healthy couples having when trying to conceive naturally. IVF bumps your chances to 50-60%. Best of luck :)
I got BFP on 4th IUI with my ds 3 years ago and BFP on my 3rd IUI 13 weeks ago! Good Luck.