IUD struggles

I got the Mirena IUD back in August & I loved it, but one of my strings disappeared into my cervix and wrapped around it. And an ultrasound showed it was sitting at the bottom of my uterus. So I had it taken out today, and looking at it all together my strings were WAY too short for it to have ever been placed correctly (but it had still been effective because it was in the uterus and providing the hormone.) so they replaced it with the Liletta. And insertion hurt so bad, and I went through hours of awful nausea and vomiting. But now I feel great! Much quicker than with the first insertion where I hurt for a week or two.