I have not had the same problem with the pubic hair, but I did notice that the hair on my upper front thighs was beginning to get longer and thicker. I also have had, and this is embarrassing and I have not told anyone until now, a few long thick hairs growing around one of my nipples. I just wanted to let you know you are no alone. I had my Mirena for 3 1/2 years and had it removed a few weeks ago and hope that I go back to normal.
Hope you are feeling better with it out.