stretching sensation

Ashton
Hi ladies. I'm 4 weeks pregnant following an <a href="https://glowing.com/glow-fertility-program">IUI</a>. My labs were good but I won't see the baby until 6 weeks, 2 weeks from today
I'm having a mild stretching feeling on both sides, not a cramp though. Is this normal for 4 weeks or should I be worried?
All input welcome!