I too almost had the Mirena in for almost 5 years. I got it out this January. I had constant breast pain, still do but its not as bad.Towards the end of me having it in, the anxiety felt like I was dying. I have become a hypochondriac now, especially post removal. But Dont worry, it will get better! The first 2 months(for me ) were the most intense.
Weird thing for me, was while I had the Mirena in, I was a nympho now that its removed, ive gone back to normal. It made moody and I had bad Acne too.
My best advice is too drink lots of water to cleanse the body, exercise(even though you may not have the energy) keep yourself busy and your mind occupied. I drink a Liver Cleansing tea, milk thistle, I am afraid to go on anything else. Even though I did try zoloft for a month, which did nothing, my side effects were physical and not mental. I still get the heart palpitations, so I try to drink Gatorade or Powerade, for the pottassium and magnesium.
You may find when it is removed as your hormones balance and you get your period, the symptoms worsen!
Best of Luck and Hopefully it will be a Speedy Recovery!