Hi Tkeys,
Just wanted to wish you well and I hope that this IUI is 'the one'!
If not, and you have to move to IVF, I just wanted you to know that I too have PCOS and Lupuron was part of my protocol as well. My 1st IVF, I responded and stimmed well and even got a BFP but I lost the pregnancy due to what we later found out was a blood clotting disorder.
From what I understand, Lupron is used to suppress you so that your body doesnt do anything naturally and then the RE can instrument exactly what needs to be done.
I'm not a pro and maybe some of the other ladies can explain further but I wanted you to know that we're in the same boat and I wish you success with whatever path IF takes you!
In the end, no matter what it takes to get there, I hope that you get your little bundle/ or BUNDLES of joy