Nervous!

I was put on 100mg Clomid which I took last week. Today I had 1 follicle that was 19mm. I was given the hcg trigger shot this morning and was told the follicle would grow to 21mm by tomorrow, at which time I'm having my first <a href="https://glowing.com/glow-fertility-program">IUI</a>. Anyone else have a similar experience and get pregnant after the first <a href="https://glowing.com/glow-fertility-program">IUI</a>?