i have used both but not at the same time
i was also on levlen ed. ended up bleeding through on the pill so no good
mirena was good no pain no period and we did a lap 9 months after previous lap and mirena insertion and no endo had grown.
1st lap lots of endo, started levlen ed continuously 9 months later next lap, lots of endo so levlen ed didnt stop growth and mirena inserted