What Does Absence Of Periods After Paragard IUD Implant Indicate?

I got the paragard IUD placed three weeks ago. My period was due two days ago, but it still hasn't come yet and I'm starting to worry since it's supposed to be my first one with my IUD. I normally cramp for a week or so before getting my period as a sign that it's coming. I have only had random mild cramps that last a few seconds and now I'm having pinkish thick discharge but still not period blood or cramping. What's happening? :(