‼️HELP ME PLEASE 😭 MIRENA IUD‼️

So I’m coming up on a year on being on Mirena. I’ve had normal periods once every month, very light but lasted longer than usual. About two months ago I started to get them twice a month. Now for about two weeks I’ve been getting excruciating pain in my abdomen. I’ve even felt sharp movement associated with pain in my uterus. So I’ve checked to see if the strings are still there and they are. But I felt pain in my abdomen. Has this happened to anyone before?