Is it normal to cramp when using progesterone?

I had an <a href="https://glowing.com/glow-fertility-program">IUI</a> on 2/13 and started using progesterone yesterday. As soon as I started taking them I started cramping. Is this normal? Any success stories? I used clomid, final f and novarel had 5 follicles this month. This cramping worries me