I had no noticeable side effects when I first got it but now two ...

In response to your question, I had the Mirena for 3 years and the side effects did not start until the second year and then finally in the 3rd year I realized what was probably causing them(Mirena) My Dr. Minimized my concerns but I had it out anyways and already feel so much better 3 weeks after removal.

I too have had the Mirena in for 2 yrs. 7 months. The further along the worse the bleeding. Before Mirena regular periods, after Mirena periods every two weeks and spotting in between. It's getting to where I can't remember when they stop. Breast tenderness all the time. I also have gained weight, lack of sex drive and acne. Which I haven't had since I was a teenager....several decades ago. It's not in your imagination!