Late period, cramping and IUD


I’m 10 days late for my period and I began severely cramping a week before my first day late. I’m still cramping severely every once in a while. I’ve gotten severely bloated about two times during all this. I’m on IUD and I’ve had it for about 1 year and 5 months and I’ve never experienced this till now. What could be going on? And could I be pregnant?