Continuous cramps

Sarah
I got my skyla iud in May and everything so far has been fine. Last month my period was longer than usual but that's about the only abnormal is. Aside from the fact that I keep having days where I have continuous cramps. They feel kinda stabby and I don't know if this is a bad thing or not. Guess I'm just not one hundred percent sure on things I can feel with the iud just yet...
Anyone have anything similar happen to them?