Anyone with IUI experience?

Melissa
After my 2nd MC in May, my dr put me on Letrozole with Progesterone & extra folic acid. Never got a BFP. So we switched back to 100mg of Clomid these past few months. Still nada. So now the discussion is onto <a href="https://glowing.com/glow-fertility-program">IUI</a>. What are your experiences with it? How does it all work? Cost? How many times did you have to do it before you got your BFP?  Thanks girls.