Question for medicated IUI

Brittany • Wife to GKH 💍 Fur Mama 🐶🐱 TTC #1 🤞

I did one natural <a href="https://glowing.com/glow-fertility-program">IUI</a> with no success and next cycle I am going to do another <a href="https://glowing.com/glow-fertility-program">IUI</a> but this time medicated. I see a lot of posts in this group about taking pregnancy tests right after the trigger shot and continuing until you don’t see a positive. This is a silly question, but why is this? I haven’t started any of the medications yet and am just curious. Thanks so much!!