Mature focilles?

Hi, I just got out of my appointment for prior <a href="https://glowing.com/glow-fertility-program">IUI</a>. They said I have two mature focilles (19 & 20) so I have to have sex with my husband and do the trigger shot tonight then come in on Wednesday for <a href="https://glowing.com/glow-fertility-program">IUI</a>. Anyone share their experience?? How big does focilles have to be for it to be released?? I’m confused about the sizes etc. I’m excited!