Sudden period on IUD

I’ve had my IUD since September of 22 and haven’t had a single period since all of the sudden on Labor Day i experienced intense cramping that had me in the bed all day and then started bleeding and it hasn’t stopped it’s consistent like a period I had to go buy a box of tampons and pamprin but the pamprin hasn’t helped and the tampons make the cramps worse which I never experienced before the iud please someone help me!! I have the Kyleena IUD.