Anyone ever unusually late on IUD?

Meoween • Be peaceful, happy, healthy, rejuvenated 💜
I've had my IUD for a little over two years now and have continuously gotten my period as scheduled maybe some months I'm like 2/3 days late but that's it. THIS time however I'm almost 3 WEEKS late which is so unusual. Has anyone ever experienced an abnormal amount of being late before?