IUD and Irregular Period

I’ve had my IUD in for a year and a few months, since then I’ve had months where I have no period at all and months where I just had a normal length period with light bleeding and almost no fresh blood. Well like I said it’s been a year and some months, this period I’m currently on has been happening for 15 days all fresh blood! It’s still not heavy enough to wear a tampon (I don’t think) but I can fill a pantyliner in roughly 6-8 hours. I’ve noticed these last few days it’s stopping at night but starting again around the afternoon hours. Has anyone else experienced this??