Did progesterone help you get pregnant after iui?

I had a baby 9 months ago and we are trying for number two. Our first <a href="https://glowing.com/glow-fertility-program">IUI</a> worked with our daughter and I was not put on progesterone after my <a href="https://glowing.com/glow-fertility-program">iui</a>. I was just curious if pri helped you get pregnant and why I may have been put on it this time?

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