Unbearable cramps with mirena please help

Et

I've had mirena for 8 months. When I first got it my cramps were so bad that I basically laid in bed. I had bad cramps for 2 weeks. Now I'm on month 8 and those cramps are coming back. Any advice? Why is this suddenly happening? My IUD is in place. It's so bad I cant stand. I have to take deep breaths and wait for the pain to pass. This is one of my only methods I can use. So I really hope this isn't a long term problem for me.