L.R.
I've had the Mirena for over 5 years now and recommend it - it was tough at 1st as I had very heavy periods and a bit of cramping but that went away after the 1st year or so.
BTW why a woman would call birth control "a waste of money, doesnt work and generally is immoral unless you have good reasons for it" really should educate themselves.
Here's to women making good choices!!!