I’ve had a total of 5 unmedicated IUI’s. The very first one got me pregnant, but unfortunately, I had a miscarriage. I am actually in the middle of my 6th one now (don’t know the outcome yet!)
It IS possible to get pregnant that way, but the reason I’ve been trying it is we don’t have any known problems with me, and we have been using donor sperm of very high quality.
I’m not sure how your unmedicated chances will be if you have a male factor problem. That being said, maybe it’s worth trying for your first one.
If you want to use medications, I would suggest asking your doctor about it! Maybe they will help you if you want to be more aggressive.
I wish you the best of luck!