Don't do it! I've had low-grade depression on and off for years...got worse with Mirena...feel like I have PMS all the time...and generally just don't feel right. More headaches and fatigue...After 11 months I'm having it removed this coming week. I believe the progestin that the mirena releases does indeed become systemic (they told me not so) I've never done well on BC pills and haven't done well with this. Maybe your experience will be different, but I wouldn't reccomend it.