I searched and didn't find anything, but has anyone had any experience with Mirena causing autoimmune dysfunction/disorder?

I had my Mirena put in about 2 years ago, and immediately had HORRIBLE pain. For weeks. After it subsided, my periods were still awful. I had cramps for 3 weeks out of every month. I asked my gyno to take it out and she told me no - wanted me to give it time. Because of my history of the pill causing constant migraines, she was concerned that the pill would eventually cause me to have a stroke. She said that Mirena was my last hope, short of a hysterectomy. She wanted me to have depo-provera shots, but all of my friends advised me against that.

So fast-forward 2 years. My periods and cramps eventually did get better. I still get bad cramps, but only for a few days. I thought I could live with that.

But all of a sudden, in the last month, my entire body has started to hurt. I have horrible pain in my hands, feet, ankles, knees, low back, shoulders, wrists, and elbows. I also developed a "lacey" rash on my legs. I went to my PCP and he gave a preliminary diagnosis of autoimmune dysfunction. He did a bunch of tests, and thus far everything's come back "within normal limits." I'm waiting for the final test results to come later back this week. Basically what it boils down to is that in a month, I went from being healthy and in pretty good shape (I'm 37 and have a 2nd degree black belt) to being barely able to walk, and unable to pick up a bowl of cereal. Seriously effed up. At this rate, I'll be wheelchair bound in less than a year.

So I started thinking. Evaluating everything I've ever done in my life. And it occured to me that it might be the Mirena. So I started searching and found this site. I found a few other articles here and there showing a causal relationship between the two, but there are so many people here, I though I'd ask.

And I'm also seeing all of these articles about crashing after having it removed. Am I going to feel WORSE if I have it taken out???? How long do these crashes last? Are they recurring? Indefinitely or for a while?