IUD-Bleeding/Spotting

Montanna
I've had mine for just over a year. I have had terrible issues with irregular periods and spotting. The cramps are gone, but I'll go a few months where everything is perfect, and then a few months of non stop spotting with a heavier period every other week. Not sure if that's just how my body wants to react to it or what. It has been successful with pregnancy protection tho!
Has anyone else experienced the same bleeding and spotting?