HELP -movement in stomach , not pregnant

sara • 23♑️ Mommy🍼 Student📚

I’m not pregnant I have an IUD I feel this first size mass moving around in my stomach sometimes.

 I just wrote it off as having bad cramps a lot of the time but I think there might be something wrong. Has anyone experienced this? I’ll attach photos but it won’t let me add a video. Thank you.