What are common post-mirena symptoms?

I had Mirena for 3.5 years. I was depressed from the beginning, but never thought this could be the cause. When I was finally diagnosed, my therapist recommended me removing it, and I did. I am still anxious and dealing with depression, but it is getting better. I removed my Mirena two years ago, and have been off any hormones. Six months ago I started having classical progesterone deficiency symptoms, my OBGYN is running all the tests to confirm. How long after removal can Mirena cause hormonal imbalance? And how do you treat it, if I don't want to take birth-control pills?
Thanks for having this forum and for any information you can provide.
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