I have never seen the odds regarding your second question, but the highest # I heard regarding odds of success w/ IUI is about 35% per cycle - and this is with injectibles. My RE said the odds are 25% with each cycle. Let's assume best case scenario (35% chance of success each cycle), we can look at the odds of getting pregnant WITHIN A CERTAIN # OF CYCLES:
1 cycle = 35%
2 cycles = 58%
3 cycles = 73%
4 cycles = 82%
5 cycles = 88%
6 cycles = 92%
Personally, I think 25% is a bit more realistic, so I'll list those #s too:
1 cycle = 35%
2 cycles = 44%
3 cycles = 58%
4 cycles = 68%
5 cycles = 76%
6 cycles = 82%
I've heard of people doing way more than 3 IUIs. I just saw a girl on another message board today who is on her 11th IUI! I know we will be doing more than 3. I am thinking 3 unmedicated, 3 w/ clomid, and 3 w/ injectibles. Then we'd move onto IVF (but hopefully we won't have to do all that!)