Paragard users....

So, I've had mine for a month and so far I have no complaints. I did get my period this morning, but so far it seems like a normal period. No bad cramps or anything.
What I am curious about is that I am getting cramping in my lower back. I noticed it the few days after I had it put it, too. Does anyone get this now that they have the paragard? I never got that before. I have to say, so far, I love it. Granted, it's been a month and this period will really be the test since they inserted during my last period. But yeah, it's weird to me that my lower back is cramping