Letrozole even if ovulating?

Luna • Mother of a 3 yr old boy 👦🏻 pregnant with #2 July 2020

I am about to start taking Letrozole 5mg for 5 days. I do ovulate, so I really don’t understand why my doctor is putting me on it. I just did my first <a href="https://glowing.com/glow-fertility-program">IUI</a>, and of course it failed. Didn’t take any medication for that one. And this is probably going to help me for my second <a href="https://glowing.com/glow-fertility-program">IUI</a>. I just thought Letrozole is supposed to help you ovulate, but I do. I am confused 🤷‍♀️