6 day post IUI

Hello, I had an <a href="https://glowing.com/glow-fertility-program">IUI</a> Iast Wednesday and yesterday on day 5 I had cramping/ twinge feeling on my left side in front and also lower back. I am curious if anyone else has ever had that? Also, I am on progesterone and wondering if that’s a side affect? I don’t have any cramping today. Anyone’s experience of thought would be appreciated. Thank you.