I just wanted to let you know that one of my worst symptoms was the anxiety. I struggled with it for several months post-Mirena. I would say it was about 90% at the 6 month mark. Right now I am about 98% better. I didn't take any medication. It has just eased up on its own. I would say the beginning of getting better was when I starting working again. Work was a good distraction for me. The main thing that caused my anxiety was fear of being sick with cancer or something else awful. I also worried about my kids' health - even though there was no reason to worry. Being at work helped my to stop focusing on it and slowly the anxiety has improved.
I do have family history of anxiety so I think that is something that I will have to deal with for the rest of my life.
I think it will get better for you. Keep a positive mind.