Mirena and doxycyclene

I had my Mirena inserted about 8 months ago, and although the insertion was so painful that I passed out for a few seconds afterward, I didn't really think I was experiencing any other issues afterward. But after about 3 months I was experiencing pretty bad acne. I went to a dermatologist and she told me that the Mirena may be causing it, and other women have had to have it taken out because of acne problems. I have now been on Doxycycline for the acne for 3 months. And no change. I have large red cysts on my chin and jawline. I can also feel acne on my scalp. I was happy with the reduced bleeding, and no cramps. I really haven't had problems with any other side effects, but the acne is bad, so I am calling tomorrow to have it removed.