First period with the Copper IUD

Cassy

hey 👋 so I got a copper IUD inserted December 18 or something like that during my period. I got my first natural period on IUD 3 weeks ago.... and I still am bleeding very lightly on and off, sometimes will be brown, then sometimes randomly it’ll be actual red blood. Can any one give me info on why this happens and when it’ll stop?? I just had my iud checked last Monday so everything is fine and in place etc... annoying being spotty 24:7 especially while being in a serious relationship.