Missed period with Skyla

So I got my IUD in while on my period 2 months ago. About a month later I got my period which was 9 days long, slightly longer than normal which was expected. I haven't gotten my period for December however and am about 10 days late. I had a couple spotting days after my November period. I know a small percentage stop their period all together... I'm wondering if anyone on Skyla stopped getting their period so soon??