Real bad pain.. Help!?

lexi
Okay so I know I ask a lot on here aha but I got my Mirena on the 30th of June. And so far everything has been okay. But lately I'm pretty sure I got my first real period since I had it inserted. I've been spotting since I got it but this time it's a full bleed. But my cramps are terrible and they hurt REALLY BAD. Is this normal???