IUI egg size?

Tara

I’m going through the <a href="https://glowing.com/glow-fertility-program">IUI</a> process right now. I’ve had my second US and bloodwork done. All I know is that I had one egg measure 13. How big should it be before they trigger??

I think she said I had 2.5 eggs that could mature/grow big enough....😩 a little discouraging.